Bug 1301340 - part3: Force single content process for tests that times out. r=mrbkap

browser/components/contextualidentity/test/browser/browser_serviceworkers.js

@@ -25,7 +25,8 @@ add_task(function* setup() {
   // make sure userContext is enabled.
   yield new Promise(resolve => {
     SpecialPowers.pushPrefEnv({"set": [
-      ["privacy.userContext.enabled", true]
+      ["privacy.userContext.enabled", true],
+      ["dom.ipc.processCount", 1]
     ]}, resolve);
   });
 });

devtools/client/webconsole/test/browser_webconsole_show_subresource_security_errors.js

@@ -13,6 +13,12 @@ const TEST_DOC = "https://example.com/browser/devtools/client/webconsole/" +
                  "test/test_bug1092055_shouldwarn.html";
 const SAMPLE_MSG = "specified a header that could not be parsed successfully.";
 
+add_task(function* setup() {
+  yield SpecialPowers.pushPrefEnv({
+    set: [["dom.ipc.processCount", 1]]
+  });
+});
+
 add_task(function* () {
   let { browser } = yield loadTab(TEST_URI);
 

devtools/client/webconsole/test/browser_webconsole_split.js

@@ -8,6 +8,11 @@
 const TEST_URI = "data:text/html;charset=utf-8,Web Console test for splitting";
 
 function test() {
+  waitForExplicitFinish();
+  SpecialPowers.pushPrefEnv({"set": [["dom.ipc.processCount", 1]]}, runTest);
+}
+
+function runTest() {
   // Test is slow on Linux EC2 instances - Bug 962931
   requestLongerTimeout(2);
 

toolkit/content/tests/browser/browser_audioCompeting.js

@@ -63,7 +63,8 @@ function play_non_autoplay_audio () {
 add_task(function* setup_test_preference() {
   yield new Promise(resolve => {
     SpecialPowers.pushPrefEnv({"set": [
-      ["dom.audiochannel.audioCompeting", true]
+      ["dom.audiochannel.audioCompeting", true],
+      ["dom.ipc.processCount", 1]
     ]}, resolve);
   });
 });