Use the WebTestProxy for layout tests in content_shell

- Add a hook to the content renderer client to allow embedders to override the
  creation of RenderViewImpls. To simplify this, I consolidate the parameters
  passed to RVI's constructor into a struct.

- Add a content_layouttest_support library that provides a method for creating
  a modified RenderViewImpl suitable for running layout tests.

- Use above library from the content_shell.

BUG=111316
TEST=almost all accessibility tests pass.

Review URL: https://codereview.chromium.org/11362161

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167341 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 40 insertions, 0 deletions

diff --git a/content/test/layouttest_support.cc b/content/test/layouttest_support.cc
new file mode 100644
index 0000000..ea70318
--- /dev/null
+++ b/content/test/layouttest_support.cc
@@ -0,0 +1,40 @@
+// 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/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));
+  if (g_callback == 0)
+    return render_view_proxy;
+  g_callback.Get().Run(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