Move BrowserThread to content namespace.

content/browser/in_process_webkit/webkit_context_unittest.cc

 // 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.
 
 #include "content/browser/in_process_webkit/dom_storage_context.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
 #include "content/test/test_browser_context.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using content::BrowserThread;
+
 class MockDOMStorageContext : public DOMStorageContext {
  public:
   MockDOMStorageContext(WebKitContext* webkit_context,
                         quota::SpecialStoragePolicy* special_storage_policy)
       : DOMStorageContext(webkit_context, special_storage_policy),
         purge_count_(0) {
   }
 
   virtual void PurgeMemory() {
     EXPECT_FALSE(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 44 matching lines @@
     EXPECT_EQ(0, mock_context->purge_count());
     context->PurgeMemory();
     MessageLoop::current()->RunAllPending();
     EXPECT_EQ(1, mock_context->purge_count());
   }
   // WebKitContext's destructor posts stuff to the webkit thread.  Let
   // WebKitContext go out of scope here before processing WebKitContext's
   // clean-up tasks.
   MessageLoop::current()->RunAllPending();
 }