Get rid of a bunch of view_messages.h includes from chrome by making the TabContentsObserver inte...

chrome/browser/extensions/extension_tab_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #pragma once
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
@@ skipping 73 matching lines @@
   }
 
   // Sets a non-extension app icon associated with TabContents and fires an
   // INVALIDATE_TITLE navigation state change to trigger repaint of title.
   void SetAppIcon(const SkBitmap& app_icon);
 
  private:
   // TabContentsObserver overrides.
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
-      const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
+      const content::FrameNavigateParams& params) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // ExtensionFunctionDispatcher::Delegate overrides.
   virtual Browser* GetBrowser() OVERRIDE;
   virtual gfx::NativeView GetNativeViewOfHost() OVERRIDE;
   virtual TabContents* GetAssociatedTabContents() const OVERRIDE;
 
   // Message handlers.
   void OnDidGetApplicationInfo(int32 page_id, const WebApplicationInfo& info);
   void OnInstallApplication(const WebApplicationInfo& info);
@@ skipping 45 matching lines @@
 
   // Cached web app info data.
   WebApplicationInfo web_app_info_;
 
   TabContentsWrapper* wrapper_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionTabHelper);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_