Revert of 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 e6c13a34daa6899f41e6ed12769d419088a5b0db..a7fe9f3eea57b099becd42f0b45ad61bbe883738 100644
--- a/net/base/mime_util.cc
+++ b/net/base/mime_util.cc
@@ -475,8 +475,9 @@
       return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 
     case MimeUtil::OPUS:
-      // Opus is supported only in Lollipop+ (API Level 21).
-      return base::android::BuildInfo::GetInstance()->sdk_int() >= 21;
+      // TODO(vigneshv): Change this similar to the VP9 check once Opus is
+      // supported on Android (http://crbug.com/318436).
+      return false;
 
     case MimeUtil::THEORA:
       return false;