1 files changed, 56 insertions, 0 deletions
diff --git a/browser/extensions/screenshots/experiments/screenshots/api.js b/browser/extensions/screenshots/experiments/screenshots/api.js
new file mode 100644
index 0000000000..d3e60aee77
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+++ b/browser/extensions/screenshots/experiments/screenshots/api.js
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals browser, AppConstants, Services, ExtensionAPI, ExtensionCommon */
+
+"use strict";
+
+const TOPIC = "menuitem-screenshot-extension";
+
+this.screenshots = class extends ExtensionAPI {
+  getAPI(context) {
+    let EventManager = ExtensionCommon.EventManager;
+
+    return {
+      experiments: {
+        screenshots: {
+          // If you are checking for 'nightly', also check for 'nightly-try'.
+          //
+          // Otherwise, just use the standard builds, but be aware of the many
+          // non-standard options that also exist (as of August 2018).
+          //
+          // Standard builds:
+          //   'esr' - ESR channel
+          //   'release' - release channel
+          //   'beta' - beta channel
+          //   'nightly' - nightly channel
+          // Non-standard / deprecated builds:
+          //   'aurora' - deprecated aurora channel (still observed in dxr)
+          //   'default' - local builds from source
+          //   'nightly-try' - nightly Try builds (QA may occasionally need to test with these)
+          getUpdateChannel() {
+            return AppConstants.MOZ_UPDATE_CHANNEL;
+          },
+          isHistoryEnabled() {
+            return Services.prefs.getBoolPref("places.history.enabled", true);
+          },
+          onScreenshotCommand: new EventManager({
+            context,
+            name: "experiments.screenshots.onScreenshotCommand",
+            register: fire => {
+              let observer = (subject, topic, data) => {
+                let type = data;
+                fire.sync(type);
+              };
+              Services.obs.addObserver(observer, TOPIC);
+              return () => {
+                Services.obs.removeObserver(observer, TOPIC);
+              };
+            },
+          }).api(),
+        },
+      },
+    };
+  }
+};