Bug 1301015 - Re-enable some devtools tests on e10s-multi; r=krizsa

Some devtools tests had been forced to run in e10s with just 1
content process in bug 1301340 and bug 1303113 because they were
failing.
Now there seems to have been enough e10s messaging fixes that these
tests work again. It seems safe to re-enable multi-content-processes
for them now.

MozReview-Commit-ID: ENfDdIXvIAI

--HG--
extra : rebase_source : 9f29d7f58088b3a99a3512b9f7e73525cb9a6e7e

devtools/client/aboutdebugging/test/browser_tabs.js

@@ -5,12 +5,6 @@
 
 const TAB_URL = "data:text/html,<title>foo</title>";
 
-add_task(function* setup() {
-  yield SpecialPowers.pushPrefEnv({
-    set: [["dom.ipc.processCount", 1]]
-  });
-});
-
 add_task(function* () {
   let { tab, document } = yield openAboutDebugging("tabs");
 

devtools/client/animationinspector/test/browser_animation_spacebar_toggles_animations.js

@@ -4,12 +4,6 @@
 
 "use strict";
 
-add_task(function* setup() {
-  yield SpecialPowers.pushPrefEnv({
-    set: [["dom.ipc.processCount", 1]]
-  });
-});
-
 // Test that the spacebar key press toggles the toggleAll button state
 // when a node with no animation is selected.
 // This test doesn't need to test if animations actually pause/resume

devtools/client/responsive.html/test/browser/browser_toolbox_swap_browsers.js

@@ -30,12 +30,6 @@ let checkToolbox = Task.async(function* (tab, location) {
   ok(!!gDevTools.getToolbox(target), `Toolbox exists ${location}`);
 });
 
-add_task(function* setup() {
-  yield SpecialPowers.pushPrefEnv({
-    set: [["dom.ipc.processCount", 1]]
-  });
-});
-
 add_task(function* () {
   let tab = yield addTab(TEST_URL);
 

devtools/client/webconsole/test/browser_webconsole_show_subresource_security_errors.js

@@ -13,12 +13,6 @@ 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

@@ -9,10 +9,6 @@ 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);
 

devtools/server/tests/browser/browser_animation_getMultipleStates.js

@@ -4,12 +4,6 @@
 
 "use strict";
 
-add_task(function* setup() {
-  yield SpecialPowers.pushPrefEnv({
-    set: [["dom.ipc.processCount", 1]]
-  });
-});
-
 // Check that the duration, iterationCount and delay are retrieved correctly for
 // multiple animations.