Explicitly specify the ui::Compositor to DelegatedFrameHost

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 3fd721091fd229a4d996108d98c706f0846c1dd6..271889969ed24b45f0f3a8ae5296c8774084b4f4 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -315,6 +315,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // Overridden from aura::WindowTreeHostObserver:
   void OnHostMoved(const aura::WindowTreeHost* host,
                    const gfx::Point& new_origin) override;
+  void OnHostCompositorWillBeDestroyed(
+      const aura::WindowTreeHost* host) override;
 
   void OnTextInputStateChanged(const ViewHostMsg_TextInputState_Params& params);
 
@@ -450,7 +452,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   void RemovingFromRootWindow();
 
   // DelegatedFrameHostClient implementation.
-  ui::Compositor* GetCompositor() const override;
   ui::Layer* GetLayer() override;
   RenderWidgetHostImpl* GetHost() override;
   bool IsVisible() override;