Callbacks through ChromeClient->RenderView->RenderViewHost for ContentsDidCha...

chrome/common/render_messages_internal.h

 // Copyright (c) 2006-2008 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <string>
 #include <vector>
@@ skipping 814 matching lines @@
   // object contains information about the node(s) that were selected when the
   // user right clicked.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_ContextMenu, ContextMenuParams)
 
   // Request that the given URL be opened in the specified manner.
   IPC_MESSAGE_ROUTED3(ViewHostMsg_OpenURL,
                       GURL /* url */,
                       GURL /* referrer */,
                       WindowOpenDisposition /* disposition */)
 
+  IPC_MESSAGE_ROUTED1(ViewHostMsg_DidContentsPreferredWidthChange,
+                      int /* pref_width */)
+
   // Following message is used to communicate the values received by the
   // callback binding the JS to Cpp.
   // An instance of browser that has an automation host listening to it can
   // have a javascript send a native value (string, number, boolean) to the
   // listener in Cpp. (DomAutomationController)
   IPC_MESSAGE_ROUTED2(ViewHostMsg_DomOperationResponse,
                       std::string  /* json_string */,
                       int  /* automation_id */)
 
   // A message from HTML-based UI.  When (trusted) Javascript calls
@@ skipping 446 matching lines @@
   IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_OpenChannelToExtension,
                               std::string /* extension_id */,
                               int /* port_id */)
 
   // Send a message to an extension process.  The handle is the value returned
   // by ViewHostMsg_OpenChannelToExtension.
   IPC_MESSAGE_CONTROL2(ViewHostMsg_ExtensionPostMessage,
                        int /* port_id */,
                        std::string /* message */)
 IPC_END_MESSAGES(ViewHost)