support adaptive playback in MSE

media/base/android/media_codec_bridge.cc

Index: media/base/android/media_codec_bridge.cc
diff --git a/media/base/android/media_codec_bridge.cc b/media/base/android/media_codec_bridge.cc
index 3b50949d55b62be332d6554e14900fcf06a1afe1..92b2791506d3eef0e67a67c24ae7185de1d8db30 100644
--- a/media/base/android/media_codec_bridge.cc
+++ b/media/base/android/media_codec_bridge.cc
@@ -716,7 +716,8 @@ VideoCodecBridge* VideoCodecBridge::CreateEncoder(const VideoCodec& codec,
 VideoCodecBridge::VideoCodecBridge(const std::string& mime,
                                    bool is_secure,
                                    MediaCodecDirection direction)
-    : MediaCodecBridge(mime, is_secure, direction) {}
+    : MediaCodecBridge(mime, is_secure, direction),
+      adaptive_playback_supported_for_testing_(-1) {}
 
 void VideoCodecBridge::SetVideoBitrate(int bps) {
   JNIEnv* env = AttachCurrentThread();
@@ -728,6 +729,16 @@ void VideoCodecBridge::RequestKeyFrameSoon() {
   Java_MediaCodecBridge_requestKeyFrameSoon(env, media_codec());
 }
 
+bool VideoCodecBridge::IsAdaptivePlaybackSupported(int width, int height) {
+  if (adaptive_playback_supported_for_testing_ == 0)
+    return false;
+  else if (adaptive_playback_supported_for_testing_ > 0)
+    return true;
+  JNIEnv* env = AttachCurrentThread();
+  return Java_MediaCodecBridge_isAdaptivePlaybackSupported(
+      env, media_codec(), width, height);
+}
+
 bool MediaCodecBridge::RegisterMediaCodecBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }