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

chrome/test/test_url_request_context_getter.cc

+// 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.
+
+#include "chrome/test/test_url_request_context_getter.h"
+
+#include "chrome/browser/browser_thread.h"
+#include "net/url_request/url_request_test_util.h"
+
+TestURLRequestContextGetter::TestURLRequestContextGetter() {}
+
+TestURLRequestContextGetter::~TestURLRequestContextGetter() {}
+
+net::URLRequestContext* TestURLRequestContextGetter::GetURLRequestContext() {
+  if (!context_)
+    context_ = new TestURLRequestContext();
+  return context_.get();
+}
+
+scoped_refptr<base::MessageLoopProxy>
+TestURLRequestContextGetter::GetIOMessageLoopProxy() const {
+  return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
+}