Ensure tests have an active task runner

components/data_reduction_proxy/content/browser/data_reduction_proxy_debug_resource_throttle_unittest.cc

 // Copyright 2015 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 "components/data_reduction_proxy/content/browser/data_reduction_proxy_debug_resource_throttle.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "components/data_reduction_proxy/content/browser/content_data_reduction_proxy_debug_ui_service.h"
@@ skipping 87 matching lines @@
 
   TestDataReductionProxyDebugResourceThrottle* throttle() const {
     return resource_throttle_.get();
   }
 
   net::URLRequest* request() const {
     return request_.get();
   }
 
  private:
+  base::MessageLoop message_loop_;
   net::TestURLRequestContext context_;
   net::TestDelegate delegate_;
   // |test_job_interceptor_| is owned by |test_job_factory_|.
   net::TestJobInterceptor* test_job_interceptor_;
   net::URLRequestJobFactoryImpl test_job_factory_;
 
   net::ProxyConfig proxy_config_;
   scoped_ptr<net::URLRequest> request_;
   scoped_ptr<ContentDataReductionProxyDebugUIService> ui_service_;
   scoped_ptr<TestDataReductionProxyDebugResourceThrottle> resource_throttle_;
@@ skipping 49 matching lines @@
   bool defer = false;
   throttle()->WillRedirectRequest(net::RedirectInfo(), &defer);
   EXPECT_FALSE(defer);
 
   request()->SetLoadFlags(net::LOAD_BYPASS_PROXY);
   throttle()->WillRedirectRequest(net::RedirectInfo(), &defer);
   EXPECT_TRUE(defer);
 }
 
 }  // namespace data_reduction_proxy