Refactor ResourceHandler API.

content/browser/loader/resource_handler.cc

 // 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.
 
 #include "content/browser/loader/resource_handler.h"
 
+#include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 
 namespace content {
 
 ResourceHandler::~ResourceHandler() {}
 
 ResourceHandler::ResourceHandler(net::URLRequest* request)
-    : controller_(NULL),
-      request_(request) {
+    : request_(request) {}
+
+std::unique_ptr<ResourceController> ResourceHandler::TakeController() {
+  DCHECK(controller_);
+
+  std::unique_ptr<ResourceController> controller;
+  std::swap(controller, controller_);
+  return controller;
 }
 
-void ResourceHandler::SetController(ResourceController* controller) {
-  controller_ = controller;
+void ResourceHandler::Resume() {
+  TakeController()->Resume();
+}
+
+void ResourceHandler::Cancel() {
+  TakeController()->Cancel();
+}
+
+void ResourceHandler::CancelAndIgnore() {
+  TakeController()->CancelAndIgnore();
+}
+
+void ResourceHandler::CancelWithError(int error_code) {
+  TakeController()->CancelWithError(error_code);
 }
 
 ResourceRequestInfoImpl* ResourceHandler::GetRequestInfo() const {
   return ResourceRequestInfoImpl::ForRequest(request_);
 }
 
 int ResourceHandler::GetRequestID() const {
   return GetRequestInfo()->GetRequestID();
 }
 
 ResourceMessageFilter* ResourceHandler::GetFilter() const {
   return GetRequestInfo()->filter();
 }
 
+void ResourceHandler::OutOfBandCancel() {
+  ResourceRequestInfoImpl* info = GetRequestInfo();
+  GlobalRequestID id = info->GetGlobalRequestID();
+  ResourceDispatcherHostImpl::Get()->CancelRequest(id.child_id, id.request_id);
+}
+
 }  // namespace content