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-rw-r--r--toolkit/components/extensions/test/xpcshell/test_ext_contentscript_xorigin_frame.js6
1 files changed, 6 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_contentscript_xorigin_frame.js b/toolkit/components/extensions/test/xpcshell/test_ext_contentscript_xorigin_frame.js
index 8a58b2475c..420fa7689c 100644
--- a/toolkit/components/extensions/test/xpcshell/test_ext_contentscript_xorigin_frame.js
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_contentscript_xorigin_frame.js
@@ -5,6 +5,12 @@ const server = createHttpServer({
});
server.registerDirectory("/data/", do_get_file("data"));
+// By default, fission.webContentIsolationStrategy=1 (IsolateHighValue). When
+// Fission is enabled on Android, the pref value 2 (IsolateHighValue) will be
+// used instead. Set to 1 (IsolateEverything) to make sure the subframe in this
+// test gets its own process, independently of the default prefs on Android.
+Services.prefs.setIntPref("fission.webContentIsolationStrategy", 1);
+
add_task(async function test_process_switch_cross_origin_frame() {
const extension = ExtensionTestUtils.loadExtension({
manifest: {