Update InterceptingResourceHandler tests to use MockResourceLoader.

content/browser/loader/test_resource_handler.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/browser/loader/test_resource_handler.h"
 
 #include "base/logging.h"
 #include "content/browser/loader/resource_controller.h"
 #include "content/public/common/resource_response.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 20 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ScopedCallDepthTracker);
 };
 
 }  // namespace
 
 TestResourceHandler::TestResourceHandler(net::URLRequestStatus* request_status,
                                          std::string* body)
     : ResourceHandler(nullptr),
       request_status_ptr_(request_status),
       body_ptr_(body),
-      deferred_run_loop_(new base::RunLoop()) {
+      deferred_run_loop_(new base::RunLoop()),
+      weak_ptr_factory_(this) {
   SetBufferSize(2048);
 }
 
 TestResourceHandler::TestResourceHandler()
     : TestResourceHandler(nullptr, nullptr) {}
 
 TestResourceHandler::~TestResourceHandler() {}
 
 void TestResourceHandler::SetController(ResourceController* controller) {
   controller_ = controller;
@@ skipping 171 matching lines @@
 
 void TestResourceHandler::WaitUntilDeferred() {
   deferred_run_loop_->Run();
   deferred_run_loop_.reset(new base::RunLoop());
 }
 
 void TestResourceHandler::WaitUntilResponseComplete() {
   response_complete_run_loop_.Run();
 }
 
+base::WeakPtr<TestResourceHandler> TestResourceHandler::GetWeakPtr() {
+  return weak_ptr_factory_.GetWeakPtr();
+}
+
 }  // namespace content