Support DataSaver for SharedWorker

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 296 matching lines @@
 
   // RenderFrame routing id used to send messages back to the parent.
   IPC_STRUCT_MEMBER(int, render_frame_route_id)
 
   // Address space of the context that created the worker.
   IPC_STRUCT_MEMBER(blink::WebAddressSpace, creation_address_space)
 
   // The type (secure or nonsecure) of the context that created the worker.
   IPC_STRUCT_MEMBER(blink::WebSharedWorkerCreationContextType,
                     creation_context_type)
+
+  // Whether Data-Saver is enabled or not.
+  IPC_STRUCT_MEMBER(bool, data_saver_enabled)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewHostMsg_CreateWorker_Reply)
   // The route id for the created worker.
   IPC_STRUCT_MEMBER(int, route_id)
 
   // The error that occurred, if the browser failed to create the
   // worker.
   IPC_STRUCT_MEMBER(blink::WebWorkerCreationError, error)
 IPC_STRUCT_END()
@@ skipping 550 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.