SharedWorker: Remove message forwarding mechanism

content/common/view_messages.h

 // Copyright (c) 2012 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 697 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_CreateWorker,
                             ViewHostMsg_CreateWorker_Params,
                             ViewHostMsg_CreateWorker_Reply)
 
 // A renderer sends this to the browser process when a document has been
 // detached. The browser will use this to constrain the lifecycle of worker
 // processes (SharedWorkers are shut down when their last associated document
 // is detached).
 IPC_MESSAGE_CONTROL1(ViewHostMsg_DocumentDetached, uint64_t /* document_id */)
 
-// Wraps an IPC message that's destined to the worker on the renderer->browser
-// hop.
-IPC_MESSAGE_CONTROL1(ViewHostMsg_ForwardToWorker,
-                     IPC::Message /* message */)
+// A renderer sends this to the browser process when it wants to connect to a
+// worker.
+IPC_MESSAGE_CONTROL2(ViewHostMsg_ConnectToWorker,
+                     int /* route_id */,
+                     int /* sent_message_port_id */)
 
 // Tells the browser that a specific Appcache manifest in the current page
 // was accessed.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_AppCacheAccessed,
                     GURL /* manifest url */,
                     bool /* blocked by policy */)
 
 // Used to go to the session history entry at the given offset (ie, -1 will
 // return the "back" item).
 IPC_MESSAGE_ROUTED1(ViewHostMsg_GoToEntryAtOffset,
@@ skipping 182 matching lines @@
                     int /* y */)
 
 #elif defined(OS_MACOSX)
 // Receives content of a web page as plain text.
 IPC_MESSAGE_ROUTED1(ViewMsg_GetRenderedTextCompleted, std::string)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.