Fix RenderWidgetHostViewGuest leak.

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/IOSurfaceAPI.h>
 #include <list>
@@ skipping 194 matching lines @@
 class CONTENT_EXPORT RenderWidgetHostViewMac
     : public RenderWidgetHostViewBase,
       public DelegatedFrameHostClient,
       public BrowserCompositorViewMacClient,
       public IPC::Sender,
       public gfx::DisplayObserver {
  public:
   // The view will associate itself with the given widget. The native view must
   // be hooked up immediately to the view hierarchy, or else when it is
   // deleted it will delete this out from under the caller.
-  explicit RenderWidgetHostViewMac(RenderWidgetHost* widget);
+  //
+  // When |is_guest_view_hack| is true, this view isn't really the view for
+  // the |widget|, a RenderWidgetHostViewGuest is.
+  // TODO(lazyboy): Remove |is_guest_view_hack| once BrowserPlugin has migrated
+  // to use RWHVChildFrame (http://crbug.com/330264).
+  RenderWidgetHostViewMac(RenderWidgetHost* widget, bool is_guest_view_hack);
   virtual ~RenderWidgetHostViewMac();
 
   RenderWidgetHostViewCocoa* cocoa_view() const { return cocoa_view_; }
 
   // |delegate| is used to separate out the logic from the NSResponder delegate.
   // |delegate| is retained by this class.
   // |delegate| should be set at most once.
   CONTENT_EXPORT void SetDelegate(
     NSObject<RenderWidgetHostViewMacDelegate>* delegate);
   void SetAllowPauseForResizeOrRepaint(bool allow);
@@ skipping 245 matching lines @@
 
   // Whether it's allowed to pause waiting for a new frame.
   bool allow_pause_for_resize_or_repaint_;
 
   // The last scroll offset of the view.
   gfx::Vector2dF last_scroll_offset_;
 
   // The text to be shown in the tooltip, supplied by the renderer.
   base::string16 tooltip_text_;
 
+  // True when this view acts as a platform view hack for a
+  // RenderWidgetHostViewGuest.
+  bool is_guest_view_hack_;
+
   // Factory used to safely scope delayed calls to ShutdownHost().
   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 
   // selected text on the renderer.
   std::string selected_text_;
 
   // The window used for popup widgets.
   base::scoped_nsobject<NSWindow> popup_window_;
 
   // The fullscreen window used for pepper flash.
@@ skipping 16 matching lines @@
 
   // The current caret bounds.
   gfx::Rect caret_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_