From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../test/webgl-mochitest/ensure-exts/ensure-ext.js |  42 +++++++
 .../ensure-exts/test_ANGLE_instanced_arrays.html   |  17 +++
 .../ensure-exts/test_EXT_blend_minmax.html         |  17 +++
 .../test_EXT_color_buffer_half_float.html          |  17 +++
 .../ensure-exts/test_EXT_disjoint_timer_query.html |  17 +++
 .../ensure-exts/test_EXT_float_blend.html          |  18 +++
 .../ensure-exts/test_EXT_frag_depth.html           |  17 +++
 .../webgl-mochitest/ensure-exts/test_EXT_sRGB.html |  17 +++
 .../ensure-exts/test_EXT_shader_texture_lod.html   |  17 +++
 .../test_EXT_texture_compression_bptc.html         |  17 +++
 .../test_EXT_texture_compression_rgtc.html         |  17 +++
 .../test_EXT_texture_filter_anisotropic.html       |  17 +++
 .../ensure-exts/test_EXT_texture_norm16.html       |  23 ++++
 .../ensure-exts/test_OES_draw_buffers_indexed.html |  18 +++
 .../ensure-exts/test_OES_fbo_render_mipmap.html    |  18 +++
 .../ensure-exts/test_OES_standard_derivatives.html |  17 +++
 .../ensure-exts/test_OVR_multiview2.html           |  18 +++
 .../ensure-exts/test_WEBGL_color_buffer_float.html |  17 +++
 .../test_WEBGL_compressed_texture_astc.html        |  17 +++
 .../test_WEBGL_compressed_texture_etc.html         |  17 +++
 .../test_WEBGL_compressed_texture_etc1.html        |  17 +++
 .../test_WEBGL_compressed_texture_pvrtc.html       |  17 +++
 .../test_WEBGL_compressed_texture_s3tc.html        |  17 +++
 .../ensure-exts/test_WEBGL_depth_texture.html      |  17 +++
 .../ensure-exts/test_WEBGL_draw_buffers.html       |  17 +++
 .../ensure-exts/test_WEBGL_provoking_vertex.html   |  18 +++
 .../webgl-mochitest/ensure-exts/test_common.html   | 128 ++++++++++++++++++++
 .../webgl-mochitest/ensure-exts/test_implicit.html | 129 +++++++++++++++++++++
 28 files changed, 735 insertions(+)
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/ensure-ext.js
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_ANGLE_instanced_arrays.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_blend_minmax.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_color_buffer_half_float.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_disjoint_timer_query.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_float_blend.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_frag_depth.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_sRGB.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_shader_texture_lod.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_bptc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_rgtc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_filter_anisotropic.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_norm16.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_draw_buffers_indexed.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_fbo_render_mipmap.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_standard_derivatives.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_OVR_multiview2.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_color_buffer_float.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_astc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc1.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_pvrtc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_s3tc.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_depth_texture.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_draw_buffers.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_provoking_vertex.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_common.html
 create mode 100644 dom/canvas/test/webgl-mochitest/ensure-exts/test_implicit.html

(limited to 'dom/canvas/test/webgl-mochitest/ensure-exts')

diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/ensure-ext.js b/dom/canvas/test/webgl-mochitest/ensure-exts/ensure-ext.js
new file mode 100644
index 0000000000..850a27caaf
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/ensure-ext.js
@@ -0,0 +1,42 @@
+"use strict";
+
+function EnsureExt(extName, shouldHave = true) {
+  EnsureExtFor("webgl", extName, shouldHave);
+  EnsureExtFor("webgl2", extName, shouldHave);
+}
+
+function EnsureExtFor(contextType, extName, shouldHave = true) {
+  var c = document.createElement("canvas");
+  var gl = c.getContext(contextType);
+
+  if (!gl) {
+    todo(false, "Failed to create context: " + contextType);
+    return;
+  }
+
+  var ext = gl.getExtension(extName);
+  var haveText = " have " + contextType + " extension " + extName + ".";
+  if (shouldHave) {
+    ok(ext, "Should" + haveText);
+  } else {
+    ok(!ext, "Should not" + haveText);
+  }
+}
+
+function Lastly_WithDraftExtsEnabled(func) {
+  SimpleTest.waitForExplicitFinish();
+
+  var fnEnsure = function () {
+    func();
+    SimpleTest.finish();
+  };
+
+  if ("SpecialPowers" in window) {
+    var prefStateList = [["webgl.enable-draft-extensions", true]];
+    var prefEnv = { set: prefStateList };
+    SpecialPowers.pushPrefEnv(prefEnv, fnEnsure);
+  } else {
+    console.log("Couldn't use SpecialPowers to enable draft extensions.");
+    fnEnsure();
+  }
+}
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_ANGLE_instanced_arrays.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_ANGLE_instanced_arrays.html
new file mode 100644
index 0000000000..5905539a49
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_ANGLE_instanced_arrays.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'ANGLE_instanced_arrays');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_blend_minmax.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_blend_minmax.html
new file mode 100644
index 0000000000..46b135b799
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_blend_minmax.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_blend_minmax');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_color_buffer_half_float.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_color_buffer_half_float.html
new file mode 100644
index 0000000000..443c7ab70a
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_color_buffer_half_float.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_color_buffer_half_float');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_disjoint_timer_query.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_disjoint_timer_query.html
new file mode 100644
index 0000000000..af94cbc658
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_disjoint_timer_query.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('EXT_disjoint_timer_query');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_float_blend.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_float_blend.html
new file mode 100644
index 0000000000..9da0d761ab
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_float_blend.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+
+EnsureExt('EXT_float_blend');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_frag_depth.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_frag_depth.html
new file mode 100644
index 0000000000..9dbac9881b
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_frag_depth.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_frag_depth');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_sRGB.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_sRGB.html
new file mode 100644
index 0000000000..cbdde000ac
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_sRGB.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_sRGB');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_shader_texture_lod.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_shader_texture_lod.html
new file mode 100644
index 0000000000..c3a51c0c9d
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_shader_texture_lod.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_shader_texture_lod');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_bptc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_bptc.html
new file mode 100644
index 0000000000..2323da591d
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_bptc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('EXT_texture_compression_bptc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_rgtc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_rgtc.html
new file mode 100644
index 0000000000..dbba5382ce
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_compression_rgtc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('EXT_texture_compression_rgtc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_filter_anisotropic.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_filter_anisotropic.html
new file mode 100644
index 0000000000..877c4440bf
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_filter_anisotropic.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('EXT_texture_filter_anisotropic');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_norm16.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_norm16.html
new file mode 100644
index 0000000000..0a636dc674
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_EXT_texture_norm16.html
@@ -0,0 +1,23 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'EXT_texture_norm16', false);
+EnsureExtFor('webgl2', 'EXT_texture_norm16', false);
+
+Lastly_WithDraftExtsEnabled(() => {
+  EnsureExtFor('webgl', 'EXT_texture_norm16', false);
+  EnsureExtFor('webgl2', 'EXT_texture_norm16', true);
+});
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_draw_buffers_indexed.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_draw_buffers_indexed.html
new file mode 100644
index 0000000000..1d5b8b7341
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_draw_buffers_indexed.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'OES_draw_buffers_indexed', false);
+EnsureExtFor('webgl2', 'OES_draw_buffers_indexed', true);
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_fbo_render_mipmap.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_fbo_render_mipmap.html
new file mode 100644
index 0000000000..e0439d3fa8
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_fbo_render_mipmap.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+
+EnsureExtFor('webgl', 'OES_fbo_render_mipmap');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_standard_derivatives.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_standard_derivatives.html
new file mode 100644
index 0000000000..359726256a
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OES_standard_derivatives.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'OES_standard_derivatives');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_OVR_multiview2.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OVR_multiview2.html
new file mode 100644
index 0000000000..4a44a20611
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_OVR_multiview2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+
+EnsureExtFor('webgl2', 'OVR_multiview2');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_color_buffer_float.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_color_buffer_float.html
new file mode 100644
index 0000000000..9a88b27712
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_color_buffer_float.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'WEBGL_color_buffer_float');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_astc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_astc.html
new file mode 100644
index 0000000000..6a9d720024
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_astc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('WEBGL_compressed_texture_astc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc.html
new file mode 100644
index 0000000000..7adaafbc82
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('WEBGL_compressed_texture_etc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc1.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc1.html
new file mode 100644
index 0000000000..327625c018
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_etc1.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('WEBGL_compressed_texture_etc1');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_pvrtc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_pvrtc.html
new file mode 100644
index 0000000000..c954813984
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_pvrtc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('WEBGL_compressed_texture_pvrtc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_s3tc.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_s3tc.html
new file mode 100644
index 0000000000..6ad8001106
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_compressed_texture_s3tc.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExt('WEBGL_compressed_texture_s3tc');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_depth_texture.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_depth_texture.html
new file mode 100644
index 0000000000..6d8a864c00
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_depth_texture.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'WEBGL_depth_texture');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_draw_buffers.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_draw_buffers.html
new file mode 100644
index 0000000000..0683516350
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_draw_buffers.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'WEBGL_draw_buffers');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_provoking_vertex.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_provoking_vertex.html
new file mode 100644
index 0000000000..76af23b87f
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_WEBGL_provoking_vertex.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+EnsureExtFor('webgl', 'WEBGL_provoking_vertex');
+EnsureExtFor('webgl2', 'WEBGL_provoking_vertex');
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_common.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_common.html
new file mode 100644
index 0000000000..8620a66f83
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_common.html
@@ -0,0 +1,128 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script>
+
+'use strict';
+
+var ENSURE = 'ENSURE'; // Works on all test machines.
+var FORBID = 'FORBID'; // Should not work on any test machine.
+var MACHINE_SPECIFIC = 'MACHINE_SPECIFIC';
+
+var defaultExts = [
+    // Ratified
+    ['ANGLE_instanced_arrays'        , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_blend_minmax'              , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_frag_depth'                , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_shader_texture_lod'        , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_texture_filter_anisotropic', [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['OES_element_index_uint'        , [ENSURE          , FORBID          ]],
+    ['OES_fbo_render_mipmap'         , [MACHINE_SPECIFIC, FORBID          ]],
+    ['OES_standard_derivatives'      , [MACHINE_SPECIFIC, FORBID          ]],
+    ['OES_texture_float'             , [ENSURE          , FORBID          ]],
+    ['OES_texture_float_linear'      , [ENSURE          , ENSURE          ]],
+    ['OES_texture_half_float'        , [ENSURE          , FORBID          ]],
+    ['OES_texture_half_float_linear' , [ENSURE          , FORBID          ]],
+    ['OES_vertex_array_object'       , [ENSURE          , FORBID          ]],
+    ['WEBGL_compressed_texture_s3tc' , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_debug_renderer_info'     , [ENSURE          , ENSURE          ]],
+    ['WEBGL_debug_shaders'           , [ENSURE          , ENSURE          ]],
+    ['WEBGL_depth_texture'           , [MACHINE_SPECIFIC, FORBID          ]],
+    ['WEBGL_draw_buffers'            , [MACHINE_SPECIFIC, FORBID          ]],
+    ['WEBGL_lose_context'            , [ENSURE          , ENSURE          ]],
+
+    // Community Approved
+    ['EXT_color_buffer_float'            , [FORBID          , ENSURE          ]],
+    ['EXT_color_buffer_half_float'       , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_disjoint_timer_query'          , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['EXT_float_blend'                   , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['EXT_sRGB'                          , [MACHINE_SPECIFIC, FORBID          ]],
+    ['EXT_texture_compression_bptc'      , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['EXT_texture_compression_rgtc'      , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['OES_draw_buffers_indexed'          , [FORBID          , MACHINE_SPECIFIC]],
+    ['OVR_multiview2'                    , [FORBID          , MACHINE_SPECIFIC]],
+    ['WEBGL_color_buffer_float'          , [MACHINE_SPECIFIC, FORBID          ]],
+    ['WEBGL_compressed_texture_astc'     , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_compressed_texture_atc'      , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_compressed_texture_etc'      , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_compressed_texture_etc1'     , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_compressed_texture_pvrtc'    , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_compressed_texture_s3tc_srgb', [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+    ['WEBGL_provoking_vertex'            , [MACHINE_SPECIFIC, MACHINE_SPECIFIC]],
+];
+
+var draftExts = [
+    ['EXT_texture_norm16'      , [FORBID          , MACHINE_SPECIFIC]],
+    ['WEBGL_explicit_present'  , [ENSURE          , ENSURE          ]],
+];
+
+////////////////////
+// Ensure that we never see any extensions that we haven't listed above!
+
+(function() {
+    const expectedExts = (defaultExts.concat(draftExts)).map(x => x[0]);
+
+    ['webgl', 'webgl2'].forEach( contextType => {
+        const c = document.createElement('canvas');
+        const gl = c.getContext(contextType);
+        if (!gl) return;
+
+        const actualExts = gl.getSupportedExtensions();
+        actualExts.forEach(actualExt => {
+            ok(expectedExts.includes(actualExt), 'Unexpected ext: ' + actualExt);
+        });
+    });
+})();
+
+////////////////////
+
+function TestExtFor(contextType, extName, status) {
+    switch (status) {
+    case ENSURE:
+        EnsureExtFor(contextType, extName);
+        break;
+
+    case FORBID:
+        EnsureExtFor(contextType, extName, false);
+        break;
+
+    case MACHINE_SPECIFIC:
+        break;
+    }
+}
+
+function TestExt(extName, statusArr) {
+    TestExtFor('webgl', extName, statusArr[0]);
+    TestExtFor('webgl2', extName, statusArr[1]);
+}
+
+////////////////////
+
+defaultExts.forEach(function(x) {
+    var extName = x[0];
+    var statusArr = x[1];
+    TestExt(extName, statusArr);
+});
+
+draftExts.forEach(function(x) {
+    var extName = x[0];
+    EnsureExt(extName, false);
+});
+
+Lastly_WithDraftExtsEnabled(function() {
+    draftExts.forEach(function(x) {
+        var extName = x[0];
+        var statusArr = x[1];
+        TestExt(extName, statusArr);
+    });
+});
+
+    </script>
+  </body>
+</html>
diff --git a/dom/canvas/test/webgl-mochitest/ensure-exts/test_implicit.html b/dom/canvas/test/webgl-mochitest/ensure-exts/test_implicit.html
new file mode 100644
index 0000000000..e3ce1ad130
--- /dev/null
+++ b/dom/canvas/test/webgl-mochitest/ensure-exts/test_implicit.html
@@ -0,0 +1,129 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <script src='/tests/SimpleTest/SimpleTest.js'></script>
+    <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
+    <script src='ensure-ext.js'></script>
+  </head>
+  <body>
+    <script id='g_vs' type='text/plain'>
+
+void main() {
+    gl_PointSize = 1.0;
+}
+
+    </script>
+    <script id='g_fs' type='text/plain'>
+
+void main() {
+    gl_FragColor = vec4(0);
+}
+
+    </script>
+    <script>
+
+'use strict';
+
+let gl = null;
+
+function CheckTexFloatRenderable(rgbaInternal, type) {
+    const tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+    gl.texImage2D(gl.TEXTURE_2D, 0, rgbaInternal, 1, 1, 0, gl.RGBA, type, null);
+
+    const fb = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
+    return gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE;
+}
+
+function CheckRbFloatRenderable(format) {
+    const rb = gl.createRenderbuffer();
+    gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
+    gl.renderbufferStorage(gl.RENDERBUFFER, format, 1, 1);
+
+    const fb = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+    gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb);
+    return gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE;
+}
+
+function CheckBlending() {
+    function CompileShader(type, elem) {
+        const text = elem.innerHTML.trim();
+        const s = gl.createShader(type);
+        gl.shaderSource(s, text);
+        gl.compileShader(s);
+        return s;
+    }
+
+    const vs = CompileShader(gl.VERTEX_SHADER, g_vs);
+    const fs = CompileShader(gl.FRAGMENT_SHADER, g_fs);
+    const p = gl.createProgram();
+    gl.attachShader(p, vs);
+    gl.attachShader(p, fs);
+    gl.linkProgram(p);
+    gl.useProgram(p);
+
+    gl.drawArrays(gl.POINTS, 0, 1);
+    if (gl.getError()) throw new Error('Unexpected GL error,');
+
+    gl.enable(gl.BLEND);
+    gl.drawArrays(gl.POINTS, 0, 1);
+    return gl.getError() == 0;
+}
+
+function ResetGl(type) {
+    if (gl) {
+        const ext = gl.getExtension('WEBGL_lose_context');
+        ext.loseContext();
+        gl = null;
+    }
+    const c = document.createElement('canvas');
+    gl = c.getContext(type);
+    return !!gl;
+}
+
+function HasExt(name) {
+    return gl.getSupportedExtensions().indexOf(name) != -1;
+}
+
+ResetGl('webgl');
+if (HasExt('EXT_color_buffer_half_float')) {
+    const ext = gl.getExtension('OES_texture_half_float');
+    const implicitEnabled = CheckTexFloatRenderable(gl.RGBA, ext.HALF_FLOAT_OES);
+    ok(implicitEnabled, 'OES_texture_half_float should implicitly enable EXT_color_buffer_half_float.');
+}
+
+ResetGl('webgl');
+if (HasExt('WEBGL_color_buffer_float')) {
+    const ext = gl.getExtension('OES_texture_float');
+    const implicitEnabled = CheckTexFloatRenderable(gl.RGBA, gl.FLOAT);
+    ok(implicitEnabled, 'OES_texture_float should implicitly enable WEBGL_color_buffer_float.');
+
+    if (HasExt('EXT_float_blend')) {
+        ok(CheckBlending(), 'OES_texture_float should implicitly enable EXT_float_blend.');
+    }
+}
+
+ResetGl('webgl');
+if (HasExt('EXT_float_blend')) {
+    const ext = gl.getExtension('WEBGL_color_buffer_float');
+    CheckRbFloatRenderable(ext.RGBA32F_EXT);
+    const implicitEnabled = CheckBlending();
+    ok(implicitEnabled, 'WEBGL_color_buffer_float should implicitly enable EXT_float_blend.');
+}
+
+if (ResetGl('webgl2')) {
+    if (HasExt('EXT_float_blend')) {
+        const ext = gl.getExtension('EXT_color_buffer_float');
+        CheckTexFloatRenderable(gl.RGBA32F, gl.FLOAT);
+        const implicitEnabled = CheckBlending();
+        ok(implicitEnabled, 'EXT_color_buffer_float should implicitly enable EXT_float_blend.');
+    }
+}
+
+    </script>
+  </body>
+</html>
-- 
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