Make content::ThrottlingURLLoader take a task runner and more efficient.

content/child/url_loader_client_impl.cc

 // Copyright 2016 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.
 
 #include "content/child/url_loader_client_impl.h"
 
 #include "base/callback.h"
 #include "base/single_thread_task_runner.h"
 #include "content/child/resource_dispatcher.h"
 #include "content/child/url_response_body_consumer.h"
 #include "content/common/resource_messages.h"
 #include "net/url_request/redirect_info.h"
 
 namespace content {
 
 URLLoaderClientImpl::URLLoaderClientImpl(
     int request_id,
     ResourceDispatcher* resource_dispatcher,
     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
-    : binding_(this),
-      request_id_(request_id),
+    : request_id_(request_id),
       resource_dispatcher_(resource_dispatcher),
       task_runner_(std::move(task_runner)),
       weak_factory_(this) {}
 
 URLLoaderClientImpl::~URLLoaderClientImpl() {
   if (body_consumer_)
     body_consumer_->Cancel();
 }
 
-void URLLoaderClientImpl::Bind(mojom::URLLoaderClientPtr* client_ptr) {
-  binding_.Bind(mojo::MakeRequest(client_ptr), task_runner_);
-}
-
 void URLLoaderClientImpl::SetDefersLoading() {
   is_deferred_ = true;
   if (body_consumer_)
     body_consumer_->SetDefersLoading();
 }
 
 void URLLoaderClientImpl::UnsetDefersLoading() {
   is_deferred_ = false;
 }
 
@@ skipping 165 matching lines @@
     StoreAndDispatch(
         ResourceMsg_UploadProgress(request_id_, current_position, total_size));
   } else {
     resource_dispatcher_->OnUploadProgress(request_id_, current_position,
                                            total_size);
   }
   std::move(ack_callback).Run();
 }
 
 }  // namespace content