Move extension messages to their own file and add a RenderViewObserver to start moving the extens...

content/browser/webui/web_ui.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/web_ui.h"
 
 #include "base/i18n/rtl.h"
 #include "base/json/json_writer.h"
 #include "base/stl_util-inl.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/generic_handler.h"
 #include "chrome/common/bindings_policy.h"
+#include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/render_messages.h"
-#include "chrome/common/render_messages_params.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
 
 namespace {
 
 string16 GetJavascript(const std::string& function_name,
                        const std::vector<const Value*>& arg_list) {
   string16 parameters;
   std::string json;
@@ skipping 24 matching lines @@
 }
 
 WebUI::~WebUI() {
   STLDeleteContainerPairSecondPointers(message_callbacks_.begin(),
                                        message_callbacks_.end());
   STLDeleteContainerPointers(handlers_.begin(), handlers_.end());
 }
 
 // WebUI, public: -------------------------------------------------------------
 
-void WebUI::ProcessWebUIMessage(const ViewHostMsg_DomMessage_Params& params) {
+void WebUI::ProcessWebUIMessage(
+    const ExtensionHostMsg_DomMessage_Params& params) {
   // Look up the callback for this message.
   MessageCallbackMap::const_iterator callback =
       message_callbacks_.find(params.name);
   if (callback == message_callbacks_.end())
     return;
 
   // Forward this message and content on.
   callback->second->Run(&params.arguments);
 }
 
@@ skipping 136 matching lines @@
   return false;
 }
 
 string16 WebUIMessageHandler::ExtractStringValue(const ListValue* value) {
   string16 string16_value;
   if (value->GetString(0, &string16_value))
     return string16_value;
   NOTREACHED();
   return string16();
 }