Move MockResourceContext to content/test.

content/browser/mock_resource_context.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/mock_resource_context.h"
-
-#include "net/url_request/url_request_test_util.h"
-
-namespace content {
-
-MockResourceContext::MockResourceContext()
-    : test_request_context_(new TestURLRequestContext),
-      media_observer_(NULL) {
-}
-
-MockResourceContext::MockResourceContext(net::URLRequestContext* context)
-    : test_request_context_(context),
-      media_observer_(NULL) {
-}
-
-MockResourceContext::~MockResourceContext() {}
-
-net::HostResolver* MockResourceContext::GetHostResolver()  {
-  return NULL;
-}
-
-net::URLRequestContext* MockResourceContext::GetRequestContext()  {
-  return test_request_context_;
-}
-
-MediaObserver* MockResourceContext::GetMediaObserver()  {
-  return media_observer_;
-}
-
-}  // namespace content