Fixing WebViewVisibilityTests for OOPIF-<webview>.

content/browser/renderer_host/render_widget_host_delegate.h

Index: content/browser/renderer_host/render_widget_host_delegate.h
diff --git a/content/browser/renderer_host/render_widget_host_delegate.h b/content/browser/renderer_host/render_widget_host_delegate.h
index f7fbb0e362247ff0b078db858a933b09e2e394d1..3048515cc859a2e6f5121d0ef8e1691e35468c31 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.h
+++ b/content/browser/renderer_host/render_widget_host_delegate.h
@@ -180,6 +180,10 @@ class CONTENT_EXPORT RenderWidgetHostDelegate {
   virtual void ForwardCompositorProto(RenderWidgetHostImpl* render_widget_host,
                                       const std::vector<uint8_t>& proto) {}
 
+  // Called when the visibility of the widget has changed in the parent
+  // renderer process.

[no sievers, 2016/01/26 20:33:07]

Can you make the comment and function name more specific?
Maybe OnChildFrameVisibilityChanged() or something?

[EhsanK, 2016/01/27 16:03:22]

Done. I am explicitly naming the function based on what has changed. In this
case, the actual entity sending the visibility change is a "RenderFrameProxy".

+  virtual void ForwardVisibilityChange(bool visible) {}
+
  protected:
   virtual ~RenderWidgetHostDelegate() {}
 };