More out-of-lining of test code, along with a bunch of GMOCK objects.

chrome/test/test_url_request_context_getter.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_TEST_TEST_URL_REQUEST_CONTEXT_GETTER_H_
 #define CHROME_TEST_TEST_URL_REQUEST_CONTEXT_GETTER_H_
 #pragma once
 
 #include "base/ref_counted.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/common/net/url_request_context_getter.h"
-#include "net/url_request/url_request_test_util.h"
+
+namespace base {
+class MessageLoopProxy;
+}
 
 // Used to return a dummy context (normally the context is on the IO thread).
 // The one here can be run on the main test thread. Note that this can lead to
 // a leak if your test does not have a BrowserThread::IO in it because
 // URLRequestContextGetter is defined as a ReferenceCounted object with a
 // special trait that deletes it on the IO thread.
 class TestURLRequestContextGetter : public URLRequestContextGetter {
  public:
-  virtual net::URLRequestContext* GetURLRequestContext() {
-    if (!context_)
-      context_ = new TestURLRequestContext();
-    return context_.get();
-  }
-  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() const {
-    return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
-  }
+  TestURLRequestContextGetter();
+  virtual ~TestURLRequestContextGetter();
+
+  // URLRequestContextGetter:
+  virtual net::URLRequestContext* GetURLRequestContext();
+  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() const;
 
  private:
   scoped_refptr<net::URLRequestContext> context_;
 };
 
 #endif  // CHROME_TEST_TEST_URL_REQUEST_CONTEXT_GETTER_H_