Browser side support (sans UI) for desktop notifications....

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2009 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 CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 559 matching lines @@
   void OnDidGetApplicationInfo(int32 page_id,
                                const webkit_glue::WebApplicationInfo& info);
   void OnMsgShouldCloseACK(bool proceed);
   void OnQueryFormFieldAutofill(const std::wstring& field_name,
                                 const std::wstring& user_text,
                                 int64 node_id,
                                 int request_id);
   void OnRemoveAutofillEntry(const std::wstring& field_name,
                              const std::wstring& value);
 
+  void OnShowDesktopNotification(const GURL& source_origin,
+                                 const GURL& url, int notification_id);
+  void OnShowDesktopNotificationText(const GURL& origin, const GURL& icon,
+                                     const string16& title,
+                                     const string16& text,
+                                     int notification_id);
+  void OnRequestNotificationPermission(const GURL& origin, int callback_id);
+
   void OnExtensionRequest(const std::string& name, const ListValue& args,
                           int request_id, bool has_callback);
   void OnExtensionPostMessage(int port_id, const std::string& message);
   void OnAccessibilityFocusChange(int acc_obj_id);
   void OnCSSInserted();
 
  private:
   friend class TestRenderViewHost;
 
   void UpdateBackForwardListCount();
@@ skipping 67 matching lines @@
   // While in this mode, mouse click is converted into InspectElement
   // command.
   bool in_inspect_element_mode_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_