Drag-and-drop: dragSourceEndedAt, dragSourceSystemDragEnded

components/plugins/renderer/webview_plugin.cc

 // Copyright 2013 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 "components/plugins/renderer/webview_plugin.h"
 
 #include <stddef.h>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 227 matching lines @@
   if (container_)
     container_->element().setAttribute("title", text);
 }
 
 void WebViewPlugin::startDragging(blink::WebReferrerPolicy,
                                   const WebDragData&,
                                   WebDragOperationsMask,
                                   const WebImage&,
                                   const WebPoint&) {
   // Immediately stop dragging.
-  web_view_->dragSourceSystemDragEnded();
+  DCHECK(web_view_->mainFrame()->isWebLocalFrame());
+  web_view_->mainFrame()->toWebLocalFrame()->frameWidget()->

[tommycli, 2016/11/15 01:25:00]

I assume frameWidget() is never null right?

[paulmeyer, 2016/11/15 01:42:54]

Right. It can never be null here.

+      dragSourceSystemDragEnded();
 }
 
 bool WebViewPlugin::allowsBrokenNullLayerTreeView() const {
   return true;
 }
 
 void WebViewPlugin::didInvalidateRect(const WebRect& rect) {
   if (container_)
     container_->invalidateRect(rect);
 }
@@ skipping 51 matching lines @@
   if (!delegate_)
     return;
 
   // The delegate may instantiate a new plugin.
   delegate_->OnUnobscuredRectUpdate(gfx::Rect(unobscured_rect));
   // The delegate may have dirtied style and layout of the WebView.
   // See for example the resizePoster function in plugin_poster.html.
   // Run the lifecycle now so that it is clean.
   web_view_->updateAllLifecyclePhases();
 }