[Chromecast] Add a custom CastMediaClient for Chromecast

chromecast/media/base/cast_media_default.cc

 // Copyright 2015 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 <memory>
 
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chromecast/base/task_runner_impl.h"
@@ skipping 87 matching lines @@
                                          double* maximum_rate) {}
 
 bool CastMediaShlib::SetMediaClockRate(double new_rate) {
   return false;
 }
 
 bool CastMediaShlib::SupportsMediaClockRateChange() {
   return false;
 }
 
+// static
+bool MediaCapabilitiesShlib::IsSupportedVideoConfig(VideoCodec codec,
+                                                    VideoProfile profile,
+                                                    int level) {
+  if (codec == kCodecH264 || codec == kCodecVP8)
+    return true;
+  return false;
+}
+
 }  // namespace media
 }  // namespace chromecast