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

content/browser/webui/generic_handler.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/webui/generic_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/values.h"
 #include "content/browser/disposition_utils.h"
+#include "content/browser/webui/web_ui.h"
 #include "content/public/browser/web_contents.h"
 
 using content::OpenURLParams;
 
 GenericHandler::GenericHandler() {
 }
 
 GenericHandler::~GenericHandler() {
 }
 
@@ skipping 27 matching lines @@
                                               meta_key, shift_key);
   if (disposition == CURRENT_TAB && target_string == "_blank")
     disposition = NEW_FOREGROUND_TAB;
 
   web_ui()->web_contents()->OpenURL(OpenURLParams(
       GURL(url_string), content::Referrer(), disposition,
       content::PAGE_TRANSITION_LINK, false));
 
   // This may delete us!
 }