[WIP]Implement Chromium side changes for navigator.language(s) support for workers.

content/common/worker_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.
 
 // Defines messages between the browser and worker process, as well as between
 // the renderer and worker process.
 
 // Multiply-included message file, hence no include guard.
 
 #include <string>
@@ skipping 26 matching lines @@
 IPC_STRUCT_END()
 
 // Parameter structure for WorkerProcessMsg_CreateWorker.
 IPC_STRUCT_BEGIN(WorkerProcessMsg_CreateWorker_Params)
   IPC_STRUCT_MEMBER(GURL, url)
   IPC_STRUCT_MEMBER(base::string16, name)
   IPC_STRUCT_MEMBER(base::string16, content_security_policy)
   IPC_STRUCT_MEMBER(blink::WebContentSecurityPolicyType, security_policy_type)
   IPC_STRUCT_MEMBER(bool, pause_on_start)
   IPC_STRUCT_MEMBER(int, route_id)
+  IPC_STRUCT_MEMBER(base::string16, accept_languages)
+IPC_STRUCT_END()
+
+IPC_STRUCT_BEGIN(WorkerProcessMsg_LanguageChange_Params)
+  IPC_STRUCT_MEMBER(int, route_id)
+  IPC_STRUCT_MEMBER(base::string16, accept_languages)
 IPC_STRUCT_END()
 
 //-----------------------------------------------------------------------------
 // WorkerProcess messages
 // These are messages sent from the browser to the worker process.
 IPC_MESSAGE_CONTROL1(WorkerProcessMsg_CreateWorker,
                      WorkerProcessMsg_CreateWorker_Params)
 
+// Sent from the browser to renderer process(hosting the shared worker),
+// when the language is changed in settings
+// This should trigger languagechange event after setting the
+// changed accept languages in WorkerNavigator.
+IPC_MESSAGE_CONTROL1(WorkerProcessMsg_LanguageChange,
+                     WorkerProcessMsg_LanguageChange_Params)
+
 //-----------------------------------------------------------------------------
 // WorkerProcessHost messages
 // These are messages sent from the worker process to the browser process.
 
 // Sent by the worker process to check whether access to web databases is
 // allowed.
 IPC_SYNC_MESSAGE_CONTROL5_1(WorkerProcessHostMsg_AllowDatabase,
                             int /* worker_route_id */,
                             GURL /* origin url */,
                             base::string16 /* database name */,
@@ skipping 47 matching lines @@
 
 IPC_MESSAGE_CONTROL1(WorkerHostMsg_WorkerScriptLoaded,
                      int /* worker_route_id */)
 
 IPC_MESSAGE_CONTROL1(WorkerHostMsg_WorkerScriptLoadFailed,
                      int /* worker_route_id */)
 
 IPC_MESSAGE_CONTROL2(WorkerHostMsg_WorkerConnected,
                      int /* message_port_id */,
                      int /* worker_route_id */)