Support Android secure codecs in requestMediaKeySystemAccess().

media/base/eme_constants.h

Index: media/base/eme_constants.h
diff --git a/media/base/eme_constants.h b/media/base/eme_constants.h
index 0b246709eb0ec414e4b354defdb48b0dd1f7d489..6d6399d60174ce060c331e2353a5f10bd9055488 100644
--- a/media/base/eme_constants.h
+++ b/media/base/eme_constants.h
@@ -129,6 +129,15 @@ enum class EmeConfigRule {
   // The configuration option is supported if both a distinctive identifier and
   // persistent state are available.
   IDENTIFIER_AND_PERSISTENCE_REQUIRED,
+#if defined(OS_ANDROID)
+  // The configuration option is supported if no hardware-secure codecs are used
+  // (as they would be for video if secure surfaces are enabled).
+  SECURE_CODECS_NOT_ALLOWED,
+  // The configuration option is supported if only hardware-secure codecs are
+  // used. This implies that secure surfaces (hole-punching) are required for
+  // video.
+  SECURE_CODECS_REQUIRED,
+#endif  // defined(OS_ANDROID)
   // The configuration option is supported without conditions.
   SUPPORTED,
 };