Fixed drag and drop into and out of Browser Plugin.

content/browser/browser_plugin/browser_plugin_guest.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. It has a
 // helper, BrowserPluginGuestHelper, which is a RenderViewHostObserver. The
@@ skipping 61 matching lines @@
 // A browser plugin guest provides functionality for WebContents to operate in
 // the guest role and implements guest-specific overrides for ViewHostMsg_*
 // messages.
 //
 // When a guest is initially created, it is in an unattached state. That is,
 // it is not visible anywhere and has no embedder WebContents assigned.
 // A BrowserPluginGuest is said to be "attached" if it has an embedder.
 // A BrowserPluginGuest can also create a new unattached guest via
 // CreateNewWindow. The newly created guest will live in the same partition,
 // which means it can share storage and can script this guest.
-class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
-                                          public WebContentsDelegate,
-                                          public WebContentsObserver {
+class CONTENT_EXPORT BrowserPluginGuest
+    : public NotificationObserver,
+      public WebContentsDelegate,
+      public WebContentsObserver,
+      public base::SupportsWeakPtr<BrowserPluginGuest> {
  public:
   typedef base::Callback<void(bool)> GeolocationCallback;
   virtual ~BrowserPluginGuest();
 
   static BrowserPluginGuest* Create(
       int instance_id,
       WebContentsImpl* web_contents);
 
   // Destroys the guest WebContents and all its associated state, including
   // this BrowserPluginGuest, and its new unattached windows.
@@ skipping 136 matching lines @@
   // BrowserPluginGuest is already destroyed.
   static void AcknowledgeBufferPresent(int route_id,
                                        int gpu_host_id,
                                        const std::string& mailbox_name,
                                        uint32 sync_point);
 
   // Returns whether BrowserPluginGuest is interested in receiving the given
   // |message|.
   static bool ShouldForwardToBrowserPluginGuest(const IPC::Message& message);
 
+  void DragSourceEndedAt(int client_x, int client_y, int screen_x,
+      int screen_y, WebKit::WebDragOperation operation);
+
+  void DragSourceMovedTo(int client_x, int client_y,
+                         int screen_x, int screen_y);
+
+  // Called when the drag started by this guest ends at an OS-level.
+  void EndSystemDrag();
+
  private:
   typedef std::pair<MediaStreamRequest, MediaResponseCallback>
       MediaStreamRequestAndCallbackPair;
   typedef std::map<int, MediaStreamRequestAndCallbackPair>
       MediaStreamRequestsMap;
 
   class EmbedderRenderViewHostObserver;
   friend class TestBrowserPluginGuest;
 
   BrowserPluginGuest(int instance_id,
@@ skipping 105 matching lines @@
   void OnUnlockMouse();
   void OnUnlockMouseAck(int instance_id);
   void OnUpdateRectACK(
       int instance_id,
       const BrowserPluginHostMsg_AutoSize_Params& auto_size_params,
       const BrowserPluginHostMsg_ResizeGuest_Params& resize_guest_params);
 
 
   // Message handlers for messages from guest.
 
+  void OnDragStopped();
   void OnHandleInputEventAck(
       WebKit::WebInputEvent::Type event_type,
       InputEventAckState ack_result);
   void OnHasTouchEventHandlers(bool accept);
   void OnSetCursor(const WebCursor& cursor);
   // On MacOSX popups are painted by the browser process. We handle them here
   // so that they are positioned correctly.
 #if defined(OS_MACOSX)
   void OnShowPopup(const ViewHostMsg_ShowPopup_Params& params);
 #endif
   void OnShowWidget(int route_id, const gfx::Rect& initial_pos);
   // Overriden in tests.
   virtual void OnTakeFocus(bool reverse);
-  void OnUpdateDragCursor(WebKit::WebDragOperation operation);
   void OnUpdateFrameName(int frame_id,
                          bool is_top_level,
                          const std::string& name);
   void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
 
   // Helpers for |OnRespondPermission|.
   void OnRespondPermissionDownload(int request_id, bool should_allow);
   void OnRespondPermissionGeolocation(int request_id, bool should_allow);
   void OnRespondPermissionMedia(int request_id, bool should_allow);
   void OnRespondPermissionNewWindow(int request_id, bool should_allow);
@@ skipping 60 matching lines @@
 
   typedef std::map<int, base::Callback<void(bool)> > DownloadRequestMap;
   DownloadRequestMap download_request_callback_map_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_