Speculative fix for memory leak in media galleries preferences unit test.

chrome/browser/media_gallery/media_galleries_preferences_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.
 
 // MediaGalleriesPreferences unit tests.
 
 #include "chrome/browser/media_gallery/media_galleries_preferences.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 30 matching lines @@
       : ui_thread_(content::BrowserThread::UI, &loop_),
         file_thread_(content::BrowserThread::FILE, &loop_),
         profile_(new TestingProfile()),
         extension_service_(NULL),
         default_galleries_count_(0) {
   }
 
   virtual ~MediaGalleriesPreferencesTest() {
     // TestExtensionSystem uses DeleteSoon, so we need to delete the profile
     // and then run the message queue to clean up.
+    MessageLoop::current()->RunAllPending();
     profile_.reset();
     MessageLoop::current()->RunAllPending();
   }
 
   virtual void SetUp() OVERRIDE {
     CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableMediaGalleryUI);
     extensions_dir_ = profile_->GetPath().AppendASCII("Extensions");
     ASSERT_TRUE(file_util::CreateDirectory(extensions_dir_));
 
@@ skipping 340 matching lines @@
 
   gallery_prefs()->SetGalleryPermissionForExtension(
       *regular_permission_extension.get(), user_added_id, false);
   expected_galleries_for_regular.erase(user_added_id);
   Verify();
 }
 
 }  // namespace
 
 }  // namespace chrome