Enable VP9 HW decoder on Exynos chips.

talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java

Index: talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
diff --git a/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java b/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
index f60f3e56772f4a8cc887908e5841e5d910cc488b..434fc53612024d60c6f3eb6250c97266ef185aec 100644
--- a/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
+++ b/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
@@ -85,7 +85,7 @@ public class MediaCodecVideoDecoder {
     {"OMX.qcom.", "OMX.Nvidia.", "OMX.Exynos.", "OMX.Intel." };
   // List of supported HW VP9 decoders.
   private static final String[] supportedVp9HwCodecPrefixes =
-    {"OMX.qcom."};
+    {"OMX.qcom.", "OMX.Exynos." };
   // List of supported HW H.264 decoders.
   private static final String[] supportedH264HwCodecPrefixes =
     {"OMX.qcom.", "OMX.Intel." };