Test for BrowserPlugin-based WebView Focus

content/browser/frame_host/render_widget_host_view_child_frame.h

Index: content/browser/frame_host/render_widget_host_view_child_frame.h
diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.h b/content/browser/frame_host/render_widget_host_view_child_frame.h
index 67f11be261aa0c7ad143e576233cf0bc74f63178..81724d3cd0cc4a6b42389f99c775aad246967762 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.h
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.h
@@ -189,6 +189,8 @@ class CONTENT_EXPORT RenderWidgetHostViewChildFrame
   void RegisterSurfaceNamespaceId();
   void UnregisterSurfaceNamespaceId();
 
+  unsigned frame_count() const { return frame_count_; }
+
  protected:
   friend class RenderWidgetHostView;
   friend class RenderWidgetHostViewChildFrameTest;
@@ -216,6 +218,7 @@ class CONTENT_EXPORT RenderWidgetHostViewChildFrame
   float current_surface_scale_factor_;
   gfx::Rect last_screen_rect_;
   uint32_t ack_pending_count_;
+  unsigned frame_count_;

[kenrb, 2016/07/05 14:30:56]

I think this should be uint32_t, and the name might make it too easy to confuse
this with RenderWidgetHostViewBase::renderer_frame_number_, which is counting a
different thing. Counting the number of times the surface was drawn is different
from counting compositor frames.

[wjmaclean, 2016/07/05 15:04:22]

Done.

   cc::ReturnedResourceArray surface_returned_resources_;
 
   // frame_connector_ provides a platform abstraction. Messages