Add support for interstitial pages on android.

content/browser/web_contents/interstitial_page_impl.h

Index: content/browser/web_contents/interstitial_page_impl.h
diff --git a/content/browser/web_contents/interstitial_page_impl.h b/content/browser/web_contents/interstitial_page_impl.h
index dba542760076eac97128369fc656c3817bbfe7ce..6757a9b3352e28f3616c3247e4e58cfacd288ee0 100644
--- a/content/browser/web_contents/interstitial_page_impl.h
+++ b/content/browser/web_contents/interstitial_page_impl.h
@@ -59,6 +59,10 @@ class CONTENT_EXPORT InterstitialPageImpl
   virtual void SetSize(const gfx::Size& size) OVERRIDE;
   virtual void Focus() OVERRIDE;
 
+#if defined(OS_ANDROID)
+  virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
+#endif
+
   // Allows the user to navigate away by disabling the interstitial, canceling
   // the pending request, and unblocking the hidden renderer.  The interstitial
   // will stay visible until the navigation completes.
@@ -115,6 +119,11 @@ class CONTENT_EXPORT InterstitialPageImpl
       const ContextMenuParams& params,
       ContextMenuSourceType type) OVERRIDE;
 
+#if defined(OS_ANDROID)
+  virtual void AttachLayer(WebKit::WebLayer* layer) OVERRIDE;
+  virtual void RemoveLayer(WebKit::WebLayer* layer) OVERRIDE;
+#endif
+
   // RenderWidgetHostDelegate implementation:
   virtual void RenderWidgetDeleted(
       RenderWidgetHostImpl* render_widget_host) OVERRIDE;