Fixed drag and drop into and out of Browser Plugin.

content/browser/browser_plugin/browser_plugin_embedder.h

Index: content/browser/browser_plugin/browser_plugin_embedder.h
diff --git a/content/browser/browser_plugin/browser_plugin_embedder.h b/content/browser/browser_plugin/browser_plugin_embedder.h
index b8450070f171e9a4aa3d27813860789e82f3680d..f1be29e7fc4dfab75cf5171f15f556ed54c890cf 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder.h
+++ b/content/browser/browser_plugin/browser_plugin_embedder.h
@@ -131,6 +131,12 @@ class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver,
                         const std::string& mailbox_name,
                         uint32 sync_point);
 
+  // Returns the guest browser plugin delegate that is currently dragging.
+  BrowserPluginGuest* GetDraggingGuest() const;
+
+  // Returns true if there is a guest currently being dragged over.
+  bool IsDragOverGuest() const;
+
   // Static factory instance (always NULL for non-test).
   static BrowserPluginHostFactory* factory_;