Fix RenderWidgetHostViewGuest leak.

content/browser/renderer_host/render_widget_host_view_aura.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_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 114 matching lines @@
     virtual void OnViewDestroyed() = 0;
 
    protected:
     virtual ~TouchEditingClient() {}
   };
 
   void set_touch_editing_client(TouchEditingClient* client) {
     touch_editing_client_ = client;
   }
 
-  explicit RenderWidgetHostViewAura(RenderWidgetHost* host);
+  // 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).
+  RenderWidgetHostViewAura(RenderWidgetHost* host, bool is_guest_view_hack);
 
   // RenderWidgetHostView implementation.
   virtual void InitAsChild(gfx::NativeView parent_view) override;
   virtual RenderWidgetHost* GetRenderWidgetHost() const override;
   virtual void SetSize(const gfx::Size& size) override;
   virtual void SetBounds(const gfx::Rect& rect) override;
   virtual gfx::Vector2dF GetLastScrollOffset() const override;
   virtual gfx::NativeView GetNativeView() const override;
   virtual gfx::NativeViewId GetNativeViewId() const override;
   virtual gfx::NativeViewAccessible GetNativeViewAccessible() override;
@@ skipping 464 matching lines @@
 
   // The last scroll offset of the view.
   gfx::Vector2dF last_scroll_offset_;
 
   gfx::Insets insets_;
 
   std::vector<ui::LatencyInfo> software_latency_info_;
 
   scoped_ptr<aura::client::ScopedTooltipDisabler> tooltip_disabler_;
 
+  // True when this view acts as a platform view hack for a
+  // RenderWidgetHostViewGuest.
+  bool is_guest_view_hack_;
+
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
 
   gfx::Rect disambiguation_target_rect_;
 
   // The last scroll offset when we start to render the link disambiguation
   // view, so we can ensure the window hasn't moved between copying from the
   // compositing surface and showing the disambiguation popup.
   gfx::Vector2dF disambiguation_scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_