Plumb through NetworkChangeNotifier::IsOffline() to WebKit, enabling

chrome/common/render_messages_internal.h

 // Copyright (c) 2011 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 <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
@@ skipping 1059 matching lines @@
 
 // Indicate whether speech input API is enabled or not.
 IPC_MESSAGE_CONTROL1(ViewMsg_SpeechInput_SetFeatureEnabled,
                      bool /* enabled */)
 
 // Sent in response to a ViewHostMsg_ContextMenu to let the renderer know that
 // the menu has been closed.
 IPC_MESSAGE_ROUTED1(ViewMsg_ContextMenuClosed,
                     webkit_glue::CustomContextMenuContext /* custom_context */)
 
+// Tells the renderer that the network state has changed and that
+// window.navigator.onLine should be updated for all WebViews.
+IPC_MESSAGE_ROUTED1(ViewMsg_NetworkStateChanged,
+                    bool /* online */)
+
 //-----------------------------------------------------------------------------
 // TabContents messages
 // These are messages sent from the renderer to the browser process.
 
 // Sent by the renderer when it is creating a new window.  The browser creates
 // a tab for it and responds with a ViewMsg_CreatingNew_ACK.  If route_id is
 // MSG_ROUTING_NONE, the view couldn't be created.
 IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_CreateWindow,
                             ViewHostMsg_CreateWindow_Params,
                             int /* route_id */,
@@ skipping 1455 matching lines @@
 // while performing stress testing.
 IPC_MESSAGE_ROUTED2(ViewMsg_JavaScriptStressTestControl,
                     int /* cmd */,
                     int /* param */)
 
 // Register a new handler for URL requests with the given scheme.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_RegisterProtocolHandler,
                     std::string /* scheme */,
                     GURL /* url */,
                     string16 /* title */)