Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/browser/ui/content_settings/content_setting_bubble_model_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/infobars/infobar_delegate.h"
 #include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/content_settings/content_setting_bubble_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/test/test_browser_thread.h"
 #include "content/public/test/web_contents_tester.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using content::BrowserThread;
 using content::WebContentsTester;
 
 class ContentSettingBubbleModelTest : public ChromeRenderViewHostTestHarness {
  protected:
-  ContentSettingBubbleModelTest()
-      : ui_thread_(BrowserThread::UI, base::MessageLoop::current()) {}
-
   virtual void SetUp() OVERRIDE {
     ChromeRenderViewHostTestHarness::SetUp();
     TabSpecificContentSettings::CreateForWebContents(web_contents());
     InfoBarService::CreateForWebContents(web_contents());
   }
 
   void CheckGeolocationBubble(size_t expected_domains,
                               bool expect_clear_link,
                               bool expect_reload_hint) {
     scoped_ptr<ContentSettingBubbleModel> content_setting_bubble_model(
         ContentSettingBubbleModel::CreateContentSettingBubbleModel(
             NULL, web_contents(), profile(),
             CONTENT_SETTINGS_TYPE_GEOLOCATION));
     const ContentSettingBubbleModel::BubbleContent& bubble_content =
         content_setting_bubble_model->bubble_content();
     EXPECT_TRUE(bubble_content.title.empty());
     EXPECT_TRUE(bubble_content.radio_group.radio_items.empty());
     EXPECT_TRUE(bubble_content.popup_items.empty());
     EXPECT_EQ(expected_domains, bubble_content.domain_lists.size());
     EXPECT_NE(expect_clear_link || expect_reload_hint,
               bubble_content.custom_link.empty());
     EXPECT_EQ(expect_clear_link, bubble_content.custom_link_enabled);
     EXPECT_FALSE(bubble_content.manage_link.empty());
   }
-
-  content::TestBrowserThread ui_thread_;
 };
 
 TEST_F(ContentSettingBubbleModelTest, ImageRadios) {
   TabSpecificContentSettings* content_settings =
       TabSpecificContentSettings::FromWebContents(web_contents());
   content_settings->OnContentBlocked(CONTENT_SETTINGS_TYPE_IMAGES,
                                      std::string());
 
   scoped_ptr<ContentSettingBubbleModel> content_setting_bubble_model(
       ContentSettingBubbleModel::CreateContentSettingBubbleModel(
@@ skipping 41 matching lines @@
   ASSERT_EQ(2U, bubble_content_2.radio_group.radio_items.size());
   // TODO(bauerb): Update this once the strings have been updated.
   EXPECT_EQ(radio1, bubble_content_2.radio_group.radio_items[0]);
   EXPECT_EQ(radio2, bubble_content_2.radio_group.radio_items[1]);
   EXPECT_FALSE(bubble_content_2.custom_link.empty());
   EXPECT_TRUE(bubble_content_2.custom_link_enabled);
   EXPECT_FALSE(bubble_content_2.manage_link.empty());
 }
 
 TEST_F(ContentSettingBubbleModelTest, Mediastream) {
+  // Required to break dependency on BrowserMainLoop.
+  MediaCaptureDevicesDispatcher::GetInstance()->
+      DisableDeviceEnumerationForTesting();
+
   scoped_ptr<ContentSettingBubbleModel> content_setting_bubble_model(
       ContentSettingBubbleModel::CreateContentSettingBubbleModel(
          NULL, web_contents(), profile(),
          CONTENT_SETTINGS_TYPE_MEDIASTREAM));
   const ContentSettingBubbleModel::BubbleContent& bubble_content =
       content_setting_bubble_model->bubble_content();
   EXPECT_FALSE(bubble_content.title.empty());
   EXPECT_EQ(2U, bubble_content.radio_group.radio_items.size());
   EXPECT_EQ(0, bubble_content.radio_group.default_item);
   EXPECT_TRUE(bubble_content.custom_link.empty());
   EXPECT_FALSE(bubble_content.custom_link_enabled);
   EXPECT_FALSE(bubble_content.manage_link.empty());
   EXPECT_EQ(2U, bubble_content.media_menus.size());
 }
 
 TEST_F(ContentSettingBubbleModelTest, BlockedMediastream) {
+  // Required to break dependency on BrowserMainLoop.
+  MediaCaptureDevicesDispatcher::GetInstance()->
+      DisableDeviceEnumerationForTesting();
+
   WebContentsTester::For(web_contents())->
       NavigateAndCommit(GURL("https://www.example.com"));
   GURL url = web_contents()->GetURL();
 
   HostContentSettingsMap* host_content_settings_map =
       profile()->GetHostContentSettingsMap();
   ContentSettingsPattern primary_pattern =
       ContentSettingsPattern::FromURL(url);
   ContentSetting setting = CONTENT_SETTING_BLOCK;
   host_content_settings_map->SetContentSetting(
@@ skipping 359 matching lines @@
     ProtocolHandler handler = registry.GetHandlerFor("mailto");
     ASSERT_FALSE(handler.IsEmpty());
     EXPECT_EQ(ASCIIToUTF16("Handler"), handler.title());
     EXPECT_EQ(CONTENT_SETTING_ALLOW,
               content_settings->pending_protocol_handler_setting());
     EXPECT_FALSE(registry.IsIgnored(test_handler));
   }
 
   registry.Shutdown();
 }