Fixed drag and drop into and out of Browser Plugin.

content/browser/web_contents/web_drag_source_gtk.h

Index: content/browser/web_contents/web_drag_source_gtk.h
diff --git a/content/browser/web_contents/web_drag_source_gtk.h b/content/browser/web_contents/web_drag_source_gtk.h
index e446e3e59e5a96b2e11a740e6ed6a6a20630fb54..90b8c0155cc37bc2272f3212297cda137408da9d 100644
--- a/content/browser/web_contents/web_drag_source_gtk.h
+++ b/content/browser/web_contents/web_drag_source_gtk.h
@@ -12,6 +12,7 @@
 #include "base/message_loop.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "ui/base/gtk/gtk_signal.h"
@@ -25,7 +26,7 @@ struct WebDropData;
 namespace content {
 
 class RenderViewHostImpl;
-class WebContents;
+class WebContentsImpl;
 
 // WebDragSourceGtk takes care of managing the drag from a WebContents
 // with Gtk.
@@ -58,11 +59,10 @@ class CONTENT_EXPORT WebDragSourceGtk : public MessageLoopForUI::Observer {
   CHROMEGTK_CALLBACK_1(WebDragSourceGtk, gboolean, OnDragIconExpose,
                        GdkEventExpose*);
 
-  RenderViewHostImpl* GetRenderViewHost() const;
   gfx::NativeView GetContentNativeView() const;
 
   // The tab we're manging the drag for.
-  WebContents* web_contents_;
+  WebContentsImpl* web_contents_;
 
   // The drop data for the current drag (for drags that originate in the render
   // view). Non-NULL iff there is a current drag.