Make AVDA fall back to software decoding if needed.

media/base/android/media_codec_bridge.h

Index: media/base/android/media_codec_bridge.h
diff --git a/media/base/android/media_codec_bridge.h b/media/base/android/media_codec_bridge.h
index 892d9c713ef9e24e849c9e3ae454f0efbf1f107d..425016eb79ff683da9f7a229c5bc96849e122c14 100644
--- a/media/base/android/media_codec_bridge.h
+++ b/media/base/android/media_codec_bridge.h
@@ -174,6 +174,9 @@ class MEDIA_EXPORT MediaCodecBridge {
                                         void* dst,
                                         size_t num);
 
+  // Returns true if and only if this is a software codec.
+  virtual bool IsSoftwareCodec() = 0;
+
  protected:
   MediaCodecBridge();