Introduce Dolby Vision video codec and Demuxer support

content/renderer/media/render_media_client.cc

 // Copyright 2014 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/renderer/media/render_media_client.h"
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/time/default_tick_clock.h"
 #include "content/public/common/content_client.h"
@@ skipping 90 matching lines @@
     case media::kCodecVP8:
     case media::kCodecVP9:
     case media::kCodecTheora:
       return true;
 
     case media::kUnknownVideoCodec:
     case media::kCodecVC1:
     case media::kCodecMPEG2:
     case media::kCodecMPEG4:
     case media::kCodecHEVC:
+    case media::kCodecDolbyVision:

[wolenetz, 2017/01/25 23:42:40]

To be clear, is there no MediaClient on chromecast (or is there some other
MediaClient on chromecast that's not this one?)

If this is the MediaClient used on chromecast, then I'm confused how
MimeUtil::AreSupportedCodecs ever indicates support for DV.

[erickung1, 2017/02/03 18:18:31]

cast has its own media::MediaClient implementation
https://cs.chromium.org/chromium/src/chromecast/common/media/cast_media_clien...

       return false;
   }
 
   NOTREACHED();
   return false;
 }
 
 void RenderMediaClient::SetTickClockForTesting(
     std::unique_ptr<base::TickClock> tick_clock) {
   tick_clock_.swap(tick_clock);
 }
 
 // This functions is for testing purpose only. The declaration in the
 // header file is guarded by "#if defined(UNIT_TEST)" so that it can be used
 // by tests but not non-test code. However, this .cc file is compiled as part of
 // "content" where "UNIT_TEST" is not defined. So we need to specify
 // "CONTENT_EXPORT" here again so that it is visible to tests.
 CONTENT_EXPORT RenderMediaClient* GetRenderMediaClientInstanceForTesting() {
   return g_render_media_client.Pointer();
 }
 
 }  // namespace content