Send TestFinished as Process/Control-msg (not View-msg).

content/shell/browser/layout_test/secondary_test_window_observer.h

Index: content/shell/browser/layout_test/secondary_test_window_observer.h
diff --git a/content/shell/browser/layout_test/secondary_test_window_observer.h b/content/shell/browser/layout_test/secondary_test_window_observer.h
index b41a95b3c571995f164f4030209d86dae60991b8..5e7f758d72f1ee208a4ea7d21cf9d362f51adf3e 100644
--- a/content/shell/browser/layout_test/secondary_test_window_observer.h
+++ b/content/shell/browser/layout_test/secondary_test_window_observer.h
@@ -18,18 +18,14 @@ class SecondaryTestWindowObserver
   ~SecondaryTestWindowObserver() override;
 
   // WebContentsObserver implementation.
-  bool OnMessageReceived(const IPC::Message& message) override;
   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
   void RenderFrameHostChanged(RenderFrameHost* old_host,
                               RenderFrameHost* new_host) override;
 
  private:
   friend class WebContentsUserData<SecondaryTestWindowObserver>;
-
   explicit SecondaryTestWindowObserver(WebContents* web_contents);
 
-  void OnTestFinishedInSecondaryRenderer();
-
   DISALLOW_COPY_AND_ASSIGN(SecondaryTestWindowObserver);
 };