media: Enable Opus support in Clank <video> and MSE

net/base/mime_util.cc

Index: net/base/mime_util.cc
diff --git a/net/base/mime_util.cc b/net/base/mime_util.cc
index e9b4e1aaab81d39c6499fbd69ae2c6beb3a69444..e03cb4ca5e822c7dc6d606e54c2f26a17d5ba91b 100644
--- a/net/base/mime_util.cc
+++ b/net/base/mime_util.cc
@@ -476,9 +476,8 @@ static bool IsCodecSupportedOnAndroid(MimeUtil::Codec codec) {
       return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 
     case MimeUtil::OPUS:
-      // TODO(vigneshv): Change this similar to the VP9 check once Opus is
-      // supported on Android (http://crbug.com/318436).
-      return false;
+      // Opus is supported only in Lollipop+ (API Level 21).
+      return base::android::BuildInfo::GetInstance()->sdk_int() >= 21;
 
     case MimeUtil::THEORA:
       return false;