[ServiceWorker] Introduce skip_service_worker flag and remove LOAD_BYPASS_CACHE check.

content/common/resource_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 resource loading.
 //
 // NOTE: All messages must send an |int request_id| as their first parameter.
 
 // Multiply-included message file, hence no include guard.
 #include "base/memory/shared_memory.h"
@@ skipping 167 matching lines @@
   IPC_STRUCT_MEMBER(uint32, request_context)
 
   // Indicates which frame (or worker context) the request is being loaded into,
   // or kAppCacheNoHostId.
   IPC_STRUCT_MEMBER(int, appcache_host_id)
 
   // Indicates which frame (or worker context) the request is being loaded into,
   // or kInvalidServiceWorkerProviderId.
   IPC_STRUCT_MEMBER(int, service_worker_provider_id)
 
+  // True if the request should not be handled by the ServiceWorker.
+  IPC_STRUCT_MEMBER(bool, skip_service_worker)
+
   // Optional resource request body (may be null).
   IPC_STRUCT_MEMBER(scoped_refptr<content::ResourceRequestBody>,
                     request_body)
 
   IPC_STRUCT_MEMBER(bool, download_to_file)
 
   // True if the request was user initiated.
   IPC_STRUCT_MEMBER(bool, has_user_gesture)
 
   // True if load timing data should be collected for request.
@@ skipping 154 matching lines @@
 
 // Sent when the renderer process deletes a resource loader.
 IPC_MESSAGE_CONTROL1(ResourceHostMsg_ReleaseDownloadedFile,
                      int /* request_id */)
 
 // Sent by the renderer when a resource request changes priority.
 IPC_MESSAGE_CONTROL3(ResourceHostMsg_DidChangePriority,
                      int /* request_id */,
                      net::RequestPriority,
                      int /* intra_priority_value */)