Remove prefixed EME.

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in

Index: third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
diff --git a/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in b/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
index 7507a9032e863f52c398f03be8ff33015691f77a..7ba5d16fec6282b0571a488eec12f74de04a8182 100644
--- a/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
+++ b/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
@@ -68,6 +68,7 @@ DurableStorage status=experimental
 ForceDisplayList2dCanvas
 // See crbug.com/585250.
 ForceDisable2dCanvasCopyOnWrite
+// We cannot remove this until we no longer support Android Jelly Bean.

[philipj_slow, 2016/02/20 12:52:20]

In other words, the flag is needed so that it can be disabled on JB? Comment
could be taken to mean that EncryptedMedia itself "should" be removed.

[ddorwin, 2016/02/22 18:30:46]

Thanks. I now think we can remove this. I replaced this with a bug reference.

 EncryptedMedia status=stable
 ExecCommandInJavaScript status=test
 ComputedAccessibilityInfo status=experimental
@@ -116,6 +117,7 @@ MediaConstraints status=test
 MediaDevices status=stable
 MediaRecorder status=stable
 MediaSession
+// We cannot remove this until we no longer support Android Jelly Bean.
 MediaSource status=stable
 MediaSourceExperimental depends_on=MediaSource, status=experimental
 MediaStreamSpeech status=experimental
@@ -143,7 +145,6 @@ Permissions status=stable
 PermissionsRequestRevoke status=experimental
 PointerEvent
 PreciseMemoryInfo
-PrefixedEncryptedMedia status=test
 // This feature is deprecated and we are evangelizing affected sites.
 // See https://crbug.com/346236 for current status.
 PrefixedVideoFullscreen status=stable