Enable adaptive playback for spitzer, use conservative size.

content/common/gpu/media/android_video_decode_accelerator.h

Index: content/common/gpu/media/android_video_decode_accelerator.h
diff --git a/content/common/gpu/media/android_video_decode_accelerator.h b/content/common/gpu/media/android_video_decode_accelerator.h
index 272a6a01a27c20382d68ff01ece2ac7a5a136580..0867cfc9589e9925039dc0a75d27ebbd611c07c0 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.h
+++ b/content/common/gpu/media/android_video_decode_accelerator.h
@@ -184,6 +184,9 @@ class CONTENT_EXPORT AndroidVideoDecodeAccelerator
     // an encrypted stream.
     media::MediaDrmBridgeCdmContext::JavaObjectPtr media_crypto_;
 
+    // Initial coded size.

[DaleCurtis, 2016/04/07 18:40:43]

Add a note that this may and probably will change over the lifetime of the
stream and should only be used as an initial hint.

[liberato (no reviews please), 2016/04/07 20:46:28]

Done.

+    gfx::Size coded_size_;

[Tima Vaisburd, 2016/04/07 18:50:01]

nit: s/coded_size_/initial_frame_size_/ ? or just |frame_size_| ?

I noticed that the word 'size' is used a lot to denote the length of a buffer in
bytes and thus can be easily confused with geometrical size of a rectangle.

[liberato (no reviews please), 2016/04/07 20:46:28]

renamed to |initial_expected_coded_size_|, per dale's suggestion.  since it
comes from |coded_size| in the decoder config, i'd like to keep the name
similar.

+
    protected:
     friend class base::RefCountedThreadSafe<CodecConfig>;
     virtual ~CodecConfig();