Move ExtensionHost into extensions namespace

chrome/browser/ui/cocoa/extensions/extension_view_mac.h

 // Copyright (c) 2012 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_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
 
 #include "base/basictypes.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 class Browser;
-class ExtensionHost;
 class SkBitmap;
 
 namespace content {
 class RenderViewHost;
 }
 
+namespace extensions {
+class ExtensionHost;
+}
+
 // This class represents extension views. An extension view internally contains
 // a bridge to an extension process, which draws to the extension view's
 // native view object through IPC.
 class ExtensionViewMac {
  public:
   class Container {
    public:
     virtual ~Container() {}
     virtual void OnExtensionSizeChanged(ExtensionViewMac* view,
                                         const gfx::Size& new_size) {}
     virtual void OnExtensionViewDidShow(ExtensionViewMac* view) {};
   };
 
-  ExtensionViewMac(ExtensionHost* extension_host, Browser* browser);
+  ExtensionViewMac(extensions::ExtensionHost* extension_host, Browser* browser);
   ~ExtensionViewMac();
 
   // Starts the extension process and creates the native view. You must call
   // this method before calling any of this class's other methods.
   void Init();
 
   // Returns the extension's native view.
   gfx::NativeView native_view();
 
   // Returns the browser the extension belongs to.
@@ skipping 32 matching lines @@
  private:
   content::RenderViewHost* render_view_host() const;
 
   void CreateWidgetHostView();
 
   // We wait to show the ExtensionView until several things have loaded.
   void ShowIfCompletelyLoaded();
 
   Browser* browser_;  // weak
 
-  ExtensionHost* extension_host_;  // weak
+  extensions::ExtensionHost* extension_host_;  // weak
 
   // The background the view should have once it is initialized. This is set
   // when the view has a custom background, but hasn't been initialized yet.
   SkBitmap pending_background_;
 
   // What we should set the preferred width to once the ExtensionView has
   // loaded.
   gfx::Size pending_preferred_size_;
 
   Container* container_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_