EME on Android: Improve accuracy of Key System availability.

media/base/media.h

 // 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.
 
 // Contains code that should be used for initializing, or querying the state
 // of the media library as a whole.
 
 #ifndef MEDIA_BASE_MEDIA_H_
 #define MEDIA_BASE_MEDIA_H_
 
@@ skipping 28 matching lines @@
 //
 // TODO(dalecurtis): These methods are temporary and should be removed once the
 // unified media pipeline is supported everywhere.  http://crbug.com/580626.
 MEDIA_EXPORT bool IsUnifiedMediaPipelineEnabled();
 
 // Similar to IsUnifiedMediaPipelineEnabled() but will also return true if
 // MediaCodec is not available (allowing the unified pipeline to take over for
 // cases where existing pipeline has no support). As above, codecs requiring
 // platform support may not be available.
 MEDIA_EXPORT bool IsUnifiedMediaPipelineEnabledForMse();
+
+// Returns whether the platform decoders are available for use.
+// This includes decoders being available on the platform and accessible, such
+// as via the GPU process. Should only be used for actual decoders
+// (e.g. MediaCodec) and not full-featured players (e.g. MediaPlayer).
+MEDIA_EXPORT bool ArePlatformDecodersAvailable();
 #endif
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_H_