Reduce/remove usage of BrowserThread in content/browser/loader.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1062 matching lines @@
                  request_context, media_request_context));
 
   // Several filters need the Blob storage context, so fetch it in advance.
   scoped_refptr<ChromeBlobStorageContext> blob_storage_context =
       ChromeBlobStorageContext::GetFor(browser_context);
 
   resource_message_filter_ = new ResourceMessageFilter(
       GetID(), storage_partition_impl_->GetAppCacheService(),
       blob_storage_context.get(),
       storage_partition_impl_->GetFileSystemContext(),
-      storage_partition_impl_->GetServiceWorkerContext(),
-      get_contexts_callback);
+      storage_partition_impl_->GetServiceWorkerContext(), get_contexts_callback,
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
 
   AddFilter(resource_message_filter_.get());
 
   media::AudioManager* audio_manager =
       BrowserMainLoop::GetInstance()->audio_manager();
   MediaStreamManager* media_stream_manager =
       BrowserMainLoop::GetInstance()->media_stream_manager();
   // The AudioInputRendererHost and AudioRendererHost needs to be available for
   // lookup, so it's stashed in a member variable.
   audio_input_renderer_host_ = new AudioInputRendererHost(
@@ skipping 1976 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing.
   // Capture the error message in a crash key value.
   base::debug::ScopedCrashKey error_key_value("mojo-message-error", error);
   bad_message::ReceivedBadMessage(render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content