Implement Mac Pop-up Dictionary for OOPIF.

content/browser/renderer_host/render_widget_host_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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <IOSurface/IOSurface.h>
 #include <stddef.h>
@@ skipping 22 matching lines @@
 #include "ipc/ipc_sender.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
 #include "ui/accelerated_widget_mac/display_link_mac.h"
 #import "ui/base/cocoa/command_dispatcher.h"
 #include "ui/base/cocoa/remote_layer_api.h"
 #import "ui/base/cocoa/tool_tip_base_view.h"
 #include "ui/display/display_observer.h"
 
 namespace content {
+class RenderWidgetHost;
 class RenderWidgetHostImpl;
 class RenderWidgetHostViewMac;
 class RenderWidgetHostViewMacEditCommandHelper;
 class WebContents;
 struct TextInputState;
 }
 
 namespace ui {
 class Compositor;
 class Layer;
@@ skipping 488 matching lines @@
 
   // Factory used to safely scope delayed calls to ShutdownHost().
   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_