Move BrowserThread to content namespace.

chrome/browser/ui/cocoa/content_settings/content_setting_bubble_cocoa_unittest.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/content_settings/content_setting_bubble_cocoa.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/debug/debugger.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/memory/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #include "chrome/browser/ui/content_settings/content_setting_bubble_model.h"
 #include "chrome/browser/ui/tab_contents/test_tab_contents_wrapper.h"
 #include "chrome/common/content_settings_types.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using content::BrowserThread;
+
 namespace {
 
 class DummyContentSettingBubbleModel : public ContentSettingBubbleModel {
  public:
   DummyContentSettingBubbleModel(TabContentsWrapper* tab_contents,
                                  Profile* profile,
                                  ContentSettingsType content_type)
       : ContentSettingBubbleModel(tab_contents, profile, content_type) {
     RadioGroup radio_group;
     radio_group.default_item = 0;
@@ skipping 53 matching lines @@
                                                         settingsType)
         parentWindow:parent
          anchoredAt:NSMakePoint(50, 20)];
     EXPECT_TRUE(controller != nil);
     EXPECT_TRUE([[controller window] isVisible]);
     [parent.get() close];
   }
 }
 
 }  // namespace