Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/browser/extensions/activity_log/activity_log_unittest.cc

Index: chrome/browser/extensions/activity_log/activity_log_unittest.cc
diff --git a/chrome/browser/extensions/activity_log/activity_log_unittest.cc b/chrome/browser/extensions/activity_log/activity_log_unittest.cc
index 9e0bb12e134871d53f4c1d415e9fed1f98dac839..1751e3752f314ff529b39fdb047789583d879987 100644
--- a/chrome/browser/extensions/activity_log/activity_log_unittest.cc
+++ b/chrome/browser/extensions/activity_log/activity_log_unittest.cc
@@ -16,8 +16,7 @@
 #include "chrome/common/extensions/dom_action_types.h"
 #include "chrome/common/extensions/extension_builder.h"
 #include "chrome/test/base/testing_profile.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/test/test_browser_thread.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "sql/statement.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -36,15 +35,12 @@ const char kExtensionId[] = "abc";
 namespace extensions {
 
 class ActivityLogTest : public testing::Test {
- public:
+ protected:
   ActivityLogTest()
-      : message_loop_(base::MessageLoop::TYPE_IO),
-        ui_thread_(BrowserThread::UI, &message_loop_),
-        db_thread_(BrowserThread::DB, &message_loop_),
-        file_thread_(BrowserThread::FILE, &message_loop_),
-        io_thread_(BrowserThread::IO, &message_loop_) {}
-
-  virtual void SetUp() OVERRIDE {
+      : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
+#if defined OS_CHROMEOS
+  test_user_manager_.reset(new chromeos::ScopedTestUserManager());
+#endif
     CommandLine command_line(CommandLine::NO_PROGRAM);
     profile_.reset(new TestingProfile());
     CommandLine::ForCurrentProcess()->AppendSwitch(
@@ -57,14 +53,12 @@ class ActivityLogTest : public testing::Test {
                 &command_line, base::FilePath(), false);
   }
 
-  virtual void TearDown() OVERRIDE {
+  virtual ~ActivityLogTest() {
+#if defined OS_CHROMEOS
+    test_user_manager_.reset();
+#endif
     base::RunLoop().RunUntilIdle();
     profile_.reset(NULL);
-    base::MessageLoop::current()->PostDelayedTask(
-        FROM_HERE,
-        base::MessageLoop::QuitClosure(),
-        base::TimeDelta::FromSeconds(4));   // Don't hang on failure.
-    base::RunLoop().RunUntilIdle();
   }
 
   static void RetrieveActions_LogAndFetchActions(
@@ -94,17 +88,11 @@ class ActivityLogTest : public testing::Test {
   scoped_ptr<TestingProfile> profile_;
   ExtensionService* extension_service_;
 
- private:
-  base::MessageLoop message_loop_;
-  content::TestBrowserThread ui_thread_;
-  content::TestBrowserThread db_thread_;
-  content::TestBrowserThread file_thread_;
-  content::TestBrowserThread io_thread_;
-
+  content::TestBrowserThreadBundle thread_bundle_;
 #if defined OS_CHROMEOS
   chromeos::ScopedTestDeviceSettingsService test_device_settings_service_;
   chromeos::ScopedTestCrosSettings test_cros_settings_;
-  chromeos::ScopedTestUserManager test_user_manager_;
+  scoped_ptr<chromeos::ScopedTestUserManager> test_user_manager_;
 #endif
 };