MD Settings: implement "RESTART" button for hardware acceleration to take effect

chrome/test/data/webui/settings/cr_settings_browsertest.js

Index: chrome/test/data/webui/settings/cr_settings_browsertest.js
diff --git a/chrome/test/data/webui/settings/cr_settings_browsertest.js b/chrome/test/data/webui/settings/cr_settings_browsertest.js
index 3f3636ffadbb8c68a62cf684b83e1c3806cc1b70..234cc31f3fb2d0d403dd8cef51d047a1934cd51c 100644
--- a/chrome/test/data/webui/settings/cr_settings_browsertest.js
+++ b/chrome/test/data/webui/settings/cr_settings_browsertest.js
@@ -200,8 +200,7 @@ CrSettingsDevicePageTest.prototype = {
   __proto__: CrSettingsBrowserTest.prototype,
 
   /** @override */
-  browsePreload:
-      'chrome://md-settings/device_page/device_page.html',
+  browsePreload: 'chrome://md-settings/device_page/device_page.html',
 
   /** @override */
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
@@ -215,3 +214,28 @@ TEST_F('CrSettingsDevicePageTest', 'DevicePage', function() {
   mocha.run();
 });
 GEN('#endif');
+
+GEN('#if !defined(OS_CHROMEOS)');
+/**
+ * @constructor
+ * @extends {CrSettingsBrowserTest}
+*/
+function CrSettingsSystemPageTest() {}
+
+CrSettingsSystemPageTest.prototype = {
+  __proto__: CrSettingsBrowserTest.prototype,
+
+  /** @override */
+  browsePreload: 'chrome://md-settings/system_page/system_page.html',
+
+  /** @override */
+  extraLibraries: CrSettingsBrowserTest.prototype.extraLibraries.concat([
+    'test_browser_proxy.js',

[dpapad, 2016/03/21 18:17:38]

TestBrowserProxy depends on PromiseResolver, so you should need to also add
ROOT_PATH + 'ui/webui/resources/js/promise_resolver.js',

not sure how it works without this (maybe something else is pulling in that
dependency).

[Dan Beam, 2016/03/22 02:16:59]

this is probably why it worked:
https://code.google.com/p/chromium/codesearch#chromium/src/ui/webui/resources...

anyways, added explicitly (still a bummer to have to flatten deps, though)

+    'system_page_tests.js',
+  ]),
+};
+
+TEST_F('CrSettingsSystemPageTest', 'Restart', function() {
+  mocha.run();
+});
+GEN('#endif');