Move Render(View|Widget)Host and associated classes to content namespace.

content/public/browser/web_contents_view_mac_delegate.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_MAC_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_MAC_DELEGATE_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
-class RenderWidgetHost;
 @protocol RenderWidgetHostViewMacDelegate;
 
 namespace content {
 
+class RenderWidgetHost;
 class WebDragDestDelegate;
 struct ContextMenuParams;
 
 // This interface allows a client to extend the functionality of
 // WebContentsViewMac.
 class WebContentsViewMacDelegate {
  public:
   virtual ~WebContentsViewMacDelegate() {}
 
   // Returns a newly-created delegate for the RenderWidgetHostViewMac, to handle
   // events on the responder chain.
   virtual NSObject<RenderWidgetHostViewMacDelegate>*
       CreateRenderWidgetHostViewDelegate(
           RenderWidgetHost* render_widget_host) = 0;
 
   // Returns a delegate to process drags not handled by content.
   virtual WebDragDestDelegate* DragDelegate() = 0;
 
   // Shows a context menu.
   virtual void ShowContextMenu(const content::ContextMenuParams& params) = 0;
 
   // Notifications that the native view was created/destroyed.
   virtual void NativeViewCreated(NSView* view) = 0;
   virtual void NativeViewDestroyed(NSView* view) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_MAC_DELEGATE_H_