test_runner: Move more Mock* files into content namespace.

content/shell/renderer/test_runner/MockSpellCheck.cpp

 // Copyright 2013 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/shell/renderer/test_runner/MockSpellCheck.h"
 
 #include "base/logging.h"
 #include "content/shell/renderer/test_runner/TestCommon.h"
 #include "third_party/WebKit/public/platform/WebCString.h"
 
+using namespace WebTestRunner;
 using namespace blink;
 using namespace std;
 
-namespace WebTestRunner {
+namespace content {
 
 namespace {
 
 void append(WebVector<WebString>* data, const WebString& item)
 {
     WebVector<WebString> result(data->size() + 1);
     for (size_t i = 0; i < data->size(); ++i)
         result[i] = (*data)[i];
     result[data->size()] = item;
     data->swap(result);
@@ skipping 150 matching lines @@
 
     // Mark as initialized to prevent this object from being initialized twice
     // or more.
     m_initialized = true;
 
     // Since this MockSpellCheck class doesn't download dictionaries, this
     // function always returns false.
     return false;
 }
 
-}
+}  // namespace content