permissionrequest API for guest Download.

content/browser/browser_plugin/browser_plugin_guest.h

Index: content/browser/browser_plugin/browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest.h b/content/browser/browser_plugin/browser_plugin_guest.h
index 1b480e6acfee67497a9939acae438476fbb43a7c..32c22230ab8bd8f478f91ce8e58f7f3dfce6dbdb 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -171,6 +171,11 @@ class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
   virtual bool CanDownload(RenderViewHost* render_view_host,
                            int request_id,
                            const std::string& request_method) OVERRIDE;
+  virtual void CanDownloadAsync(RenderViewHost* render_view_host,
+                                int download_request_id,
+                                const std::string& request_method,
+                                const base::Callback<void(bool)>& callback)
+                                    OVERRIDE;
   virtual bool HandleContextMenu(const ContextMenuParams& params) OVERRIDE;
   virtual void WebContentsCreated(WebContents* source_contents,
                                   int64 source_frame_id,
@@ -379,6 +384,7 @@ class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
   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);
@@ -432,6 +438,9 @@ class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
   typedef std::map<int, int> NewWindowRequestMap;
   NewWindowRequestMap new_window_request_map_;
 
+  typedef std::map<int, base::Callback<void(bool)> > DownloadRequestMap;
+  DownloadRequestMap download_request_callback_map_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };