Propagate opener to BackgroundsContents.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index b0468b48b22d6b2b1a23baaa938129c1b882cfe1..0640ed3daf3ca2624764a444b8ca76b46f324536 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -418,9 +418,9 @@ class CONTENT_EXPORT WebContentsImpl
   gfx::Size GetPreferredSize() const override;
   bool GotResponseToLockMouseRequest(bool allowed) override;
   bool HasOpener() const override;
-  WebContentsImpl* GetOpener() const override;
+  RenderFrameHostImpl* GetOpener() const override;
   bool HasOriginalOpener() const override;
-  WebContents* GetOriginalOpener() const override;
+  RenderFrameHostImpl* GetOriginalOpener() const override;
   void DidChooseColorInColorChooser(SkColor color) override;
   void DidEndColorChooser() override;
   int DownloadImage(const GURL& url,
@@ -1161,6 +1161,8 @@ class CONTENT_EXPORT WebContentsImpl
   // Sends a Page message IPC.
   void SendPageMessage(IPC::Message* msg);
 
+  void SetOpenerForNewContents(FrameTreeNode* opener, bool opener_suppressed);
+
   // Tracking loading progress -------------------------------------------------
 
   // Resets the tracking state of the current load progress.