Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/test/data/webui/chrome_send_browsertest.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 "chrome/test/data/webui/chrome_send_browsertest.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/values.h"
+#include "content/browser/webui/web_ui.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
+using content::WebUIMessageHandler;
+
 ChromeSendWebUITest::ChromeSendWebUITest() {}
 
 ChromeSendWebUITest::~ChromeSendWebUITest() {}
 
 ChromeSendWebUITest::ChromeSendWebUIMessageHandler::
     ChromeSendWebUIMessageHandler() {}
 
 ChromeSendWebUITest::ChromeSendWebUIMessageHandler::
     ~ChromeSendWebUIMessageHandler() {}
 
 void ChromeSendWebUITest::ChromeSendWebUIMessageHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "checkSend",
       base::Bind(&ChromeSendWebUIMessageHandler::HandleCheckSend,
                  base::Unretained(this)));
 }
 
 WebUIMessageHandler* ChromeSendWebUITest::GetMockMessageHandler() {
   return &message_handler_;
 }
 
 ChromeSendPassthroughWebUITest::ChromeSendPassthroughWebUITest() {}
 
 ChromeSendPassthroughWebUITest::~ChromeSendPassthroughWebUITest() {}
 
 void ChromeSendPassthroughWebUITest::SetUpOnMainThread() {
   ChromeSendWebUITest::SetUpOnMainThread();
   EXPECT_CALL(message_handler_, HandleCheckSend(::testing::_));
 }