Add --expose-internals-for-testing flag

content/shell/renderer/shell_render_view_observer.cc

Index: content/shell/renderer/shell_render_view_observer.cc
diff --git a/content/shell/renderer/shell_render_view_observer.cc b/content/shell/renderer/shell_render_view_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..238d443d3fb558332bf271aed8bb72c2470fba3b
--- /dev/null
+++ b/content/shell/renderer/shell_render_view_observer.cc
@@ -0,0 +1,27 @@
+// Copyright (c) 2013 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/shell/renderer/shell_render_view_observer.h"
+
+#include "base/command_line.h"
+#include "content/public/renderer/render_view.h"
+#include "content/public/renderer/render_view_observer.h"
+#include "content/shell/common/shell_switches.h"
+#include "third_party/WebKit/public/web/WebTestingSupport.h"
+#include "third_party/WebKit/public/web/WebView.h"
+
+namespace content {
+
+ShellRenderViewObserver::ShellRenderViewObserver(RenderView* render_view)
+    : RenderViewObserver(render_view) {
+}
+
+void ShellRenderViewObserver::DidClearWindowObject(WebKit::WebFrame* frame) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kExposeInternalsForTesting)) {
+    WebKit::WebTestingSupport::injectInternalsObject(frame);
+  }
+}
+
+}  // namespace content