Use the WebTestProxy for layout tests in content_shell

content/test/content_layouttest_support.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/public/test/content_layouttest_support.h"
+
+#include "base/callback.h"
+#include "base/lazy_instance.h"
+#include "content/renderer/render_view_impl.h"
+#include "third_party/WebKit/Tools/DumpRenderTree/chromium/TestRunner/public/WebTestProxy.h"
+
+using WebTestRunner::WebTestProxy;
+using WebTestRunner::WebTestProxyBase;
+
+namespace content {
+
+namespace {
+
+base::LazyInstance<base::Callback<void(WebTestProxyBase*)> >::Leaky g_callback;
+
+RenderViewImpl* CreateWebTestProxy(RenderViewImplParams* params) {
+  typedef WebTestProxy<RenderViewImpl, RenderViewImplParams*> ProxyType;
+  ProxyType* render_view_proxy = new ProxyType(
+      reinterpret_cast<RenderViewImplParams*>(params));

[jam, 2012/11/08 20:37:06]

nit: no cast needed

+  if (g_callback == 0)
+    return render_view_proxy;
+  g_callback.Get().Run(static_cast<WebTestProxyBase*>(render_view_proxy));
+  return render_view_proxy;
+}
+
+}  // namespace
+
+
+void EnableWebTestProxyCreation(
+    const base::Callback<void(WebTestProxyBase*)>& callback) {
+  g_callback.Get() = callback;
+  RenderViewImpl::InstallCreateHook(CreateWebTestProxy);
+}
+
+}  // namespace content