Fixed drag and drop into and out of Browser Plugin.

content/browser/web_contents/web_drag_source_win.h

Index: content/browser/web_contents/web_drag_source_win.h
diff --git a/content/browser/web_contents/web_drag_source_win.h b/content/browser/web_contents/web_drag_source_win.h
index 898f3c3ada546fd21966d763e5dd9d0993247d63..71956c31eea9fd715445502672d3d7bf74034c81 100644
--- a/content/browser/web_contents/web_drag_source_win.h
+++ b/content/browser/web_contents/web_drag_source_win.h
@@ -14,7 +14,7 @@
 
 namespace content {
 class RenderViewHost;
-class WebContents;
+class WebContentsImpl;
 
 // An IDropSource implementation for a WebContentsImpl. Handles notifications
 // sent by an active drag-drop operation as the user mouses over other drop
@@ -54,7 +54,7 @@ class WebDragSource : public ui::DragSourceWin,
   // We use this as a channel to the renderer to tell it about various drag
   // drop events that it needs to know about (such as when a drag operation it
   // initiated terminates).
-  RenderViewHost* render_view_host_;
+  WebContentsImpl* web_contents_;
 
   NotificationRegistrar registrar_;