Implement <webview> droplink event

content/public/browser/browser_plugin_guest_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_BROWSER_PLUGIN_GUEST_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSER_PLUGIN_GUEST_DELEGATE_H_
 
 #include "base/callback_forward.h"
 #include "base/process/kill.h"
 #include "content/common/content_export.h"
@@ skipping 33 matching lines @@
   virtual bool CanRunInDetachedState() const;
 
   // Notification that the embedder has completed attachment. The
   // |guest_proxy_routing_id| is the routing ID for the RenderView in the
   // embedder that will serve as a contentWindow proxy for the guest.
   virtual void DidAttach(int guest_proxy_routing_id) {}
 
   // Notification that the guest has detached from its container.
   virtual void DidDetach() {}
 
+  // Notification that a valid |url| was dropped over the guest.
+  virtual void DidDropLink(const GURL& url) {}
+
   // Notification that the BrowserPlugin has resized.
   virtual void ElementSizeChanged(const gfx::Size& size) {}
 
   // Returns the WebContents that currently owns this guest.
   virtual WebContents* GetOwnerWebContents() const;
 
   // Notifies that the content size of the guest has changed.
   // Note: In autosize mode, it is possible that the guest size may not match
   // the element size.
   virtual void GuestSizeChanged(const gfx::Size& new_size) {}
@@ skipping 18 matching lines @@
                     const blink::WebFindOptions& options);
   virtual bool StopFinding(StopFindAction action);
 
   // Provides the delegate with an interface with which to size the guest.
   virtual void SetGuestSizer(GuestSizer* guest_sizer) {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_PLUGIN_GUEST_DELEGATE_H_