Make drag-and-drop work with OOPIF-WebView.

content/browser/web_contents/web_contents_view_child_frame.h

Index: content/browser/web_contents/web_contents_view_child_frame.h
diff --git a/content/browser/web_contents/web_contents_view_child_frame.h b/content/browser/web_contents/web_contents_view_child_frame.h
index ce85c331d17f0aa8114c7c2e177868340eb16b0f..52ee66977253f056be3237c7f40adb30800d4d4b 100644
--- a/content/browser/web_contents/web_contents_view_child_frame.h
+++ b/content/browser/web_contents/web_contents_view_child_frame.h
@@ -70,6 +70,8 @@ class WebContentsViewChildFrame : public WebContentsView,
   WebContentsView* GetOuterView();
   const WebContentsView* GetOuterView() const;
 
+  RenderViewHostDelegateView* GetOuterRVHDV();

[ncarter (slow), 2017/01/18 19:16:35]

It is unconventional to use an abbreviation like RVHDV (which doesn't appear
anywhere else in the code) in a method name, unless the abbreviation is
extremely well known (like ID, HTML, or URL). This should be spell it out with
words (maybe GetOuterDelegateView ? )

[paulmeyer, 2017/01/18 20:08:23]

Done.

+
   // The WebContentsImpl whose contents we display.
   WebContentsImpl* web_contents_;