Fix leak in MetricsLogTest.InitialLogStabilityMetrics test.

chrome/browser/metrics/metrics_service_unittest.cc

Index: chrome/browser/metrics/metrics_service_unittest.cc
===================================================================
--- chrome/browser/metrics/metrics_service_unittest.cc	(revision 241317)
+++ chrome/browser/metrics/metrics_service_unittest.cc	(working copy)
@@ -8,7 +8,6 @@
 #include <string>
 
 #include "base/command_line.h"
-#include "base/message_loop/message_loop.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/scoped_testing_local_state.h"
@@ -16,7 +15,7 @@
 #include "components/variations/metrics_util.h"
 #include "content/public/common/process_type.h"
 #include "content/public/common/webplugininfo.h"
-#include "content/public/test/test_browser_thread.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/size.h"
 
@@ -67,8 +66,7 @@
 class MetricsServiceTest : public testing::Test {
  public:
   MetricsServiceTest()
-      : ui_thread_(content::BrowserThread::UI, &message_loop_),
-        testing_local_state_(TestingBrowserProcess::GetGlobal()) {
+      : testing_local_state_(TestingBrowserProcess::GetGlobal()) {
 #if defined(OS_CHROMEOS)
     chromeos::FakeDBusThreadManager* fake_dbus_thread_manager =
         new chromeos::FakeDBusThreadManager;
@@ -114,8 +112,7 @@
   }
 
  private:
-  base::MessageLoopForUI message_loop_;
-  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThreadBundle thread_bundle_;
   ScopedTestingLocalState testing_local_state_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsServiceTest);