Migrate MediaStream test code from content/shell/renderer/ to content/test/.

content/test/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/layouttest_support.h"
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/image_transport_surface.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
+#include "content/test/test_media_stream_client.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 #include "third_party/WebKit/public/testing/WebFrameTestProxy.h"
 #include "third_party/WebKit/public/testing/WebTestProxy.h"
 
 #if defined(OS_WIN) && !defined(USE_AURA)
 #include "content/browser/web_contents/web_contents_drag_win.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "content/browser/renderer_host/popup_menu_helper_mac.h"
@@ skipping 99 matching lines @@
                           const WebSize& max_size) {
   static_cast<RenderViewImpl*>(render_view)
       ->EnableAutoResizeForTesting(min_size, max_size);
 }
 
 void DisableAutoResizeMode(RenderView* render_view, const WebSize& new_size) {
   static_cast<RenderViewImpl*>(render_view)
       ->DisableAutoResizeForTesting(new_size);
 }
 
+void UseMockMediaStreams(RenderView* render_view) {
+  RenderViewImpl* render_view_impl = static_cast<RenderViewImpl*>(render_view);
+  render_view_impl->SetMediaStreamClientForTesting(
+      new TestMediaStreamClient(render_view_impl));
+}
+
 }  // namespace content