browser-plugin: Allow accepting drag-n-drop events.

content/browser/browser_plugin/browser_plugin_guest_helper.cc

 // 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.
 
 #include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/web_contents/web_contents_impl.h"
+#include "content/common/drag_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_view_host.h"
 
 namespace content {
 
 BrowserPluginGuestHelper::BrowserPluginGuestHelper(
     BrowserPluginGuest* guest,
     RenderViewHost* render_view_host)
     : RenderViewHostObserver(render_view_host),
       guest_(guest) {
 }
 
 BrowserPluginGuestHelper::~BrowserPluginGuestHelper() {
 }
 
 bool BrowserPluginGuestHelper::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuestHelper, message)
+    IPC_MESSAGE_HANDLER(DragHostMsg_UpdateDragCursor, OnUpdateDragCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnHandleInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowWidget, OnShowWidget)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HasTouchEventHandlers,
                         OnMsgHasTouchEventHandlers)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnSetCursor)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void BrowserPluginGuestHelper::OnUpdateDragCursor(
+    WebKit::WebDragOperation current_op) {
+  guest_->UpdateDragCursor(current_op);
+}
+
 void BrowserPluginGuestHelper::OnUpdateRect(
     const ViewHostMsg_UpdateRect_Params& params) {
   guest_->UpdateRect(render_view_host(), params);
 }
 
 void BrowserPluginGuestHelper::OnHandleInputEventAck(
     WebKit::WebInputEvent::Type event_type,
     bool processed) {
   guest_->HandleInputEventAck(render_view_host(), processed);
 }
 
 void BrowserPluginGuestHelper::OnTakeFocus(bool reverse) {
   guest_->ViewTakeFocus(reverse);
 }
 
 void BrowserPluginGuestHelper::OnShowWidget(int route_id,
                                             const gfx::Rect& initial_pos) {
   guest_->ShowWidget(render_view_host(), route_id, initial_pos);
 }
 
 void BrowserPluginGuestHelper::OnMsgHasTouchEventHandlers(bool has_handlers) {
   guest_->SetIsAcceptingTouchEvents(has_handlers);
 }
 
 void BrowserPluginGuestHelper::OnSetCursor(const WebCursor& cursor) {
   guest_->SetCursor(cursor);
 }
 
 }  // namespace content