Remove most of the media stack.

sky/engine/core/frame/UseCounter.h

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 187 matching lines @@
         PrefixedDevicePixelRatioMediaFeature = 233,
         PrefixedMaxDevicePixelRatioMediaFeature = 234,
         PrefixedMinDevicePixelRatioMediaFeature = 235,
         PrefixedTransform3dMediaFeature = 237,
         PrefixedStorageQuota = 240,
         ResetReferrerPolicy = 243,
         CaseInsensitiveAttrSelectorMatch = 244, // Case-insensitivity dropped from specification.
         FormNameAccessForImageElement = 246,
         FormNameAccessForPastNamesMap = 247,
         FormAssociationByParser = 248,
-        MediaErrorEncrypted = 253,
         WebSocketURL = 255,
         WorkerAllowedByChildBlockedByScript = 258,
         DeprecatedWebKitGradient = 260,
         DeprecatedWebKitLinearGradient = 261,
         DeprecatedWebKitRepeatingLinearGradient = 262,
         DeprecatedWebKitRadialGradient = 263,
         DeprecatedWebKitRepeatingRadialGradient = 264,
         PrefixedImageSmoothingEnabled = 267,
         UnprefixedImageSmoothingEnabled = 268,
         // The above items are available in M34 branch.
 
         TextAutosizing = 274,
         HTMLAnchorElementPingAttribute = 276,
         SVGClassName = 279,
-        HTMLMediaElementSeekToFragmentStart = 281,
-        HTMLMediaElementPauseAtFragmentEnd = 282,
         PrefixedWindowURL = 283,
         PrefixedWorkerURL = 284, // This didn't work because of crbug.com/376039. Available since M37.
         WindowOrientation = 285,
         DOMStringListContains = 286,
         DocumentCaptureEvents = 287,
         DocumentReleaseEvents = 288,
         WindowCaptureEvents = 289,
         WindowReleaseEvents = 290,
         PrefixedGamepad = 291,
         ElementAnimateKeyframeListEffectObjectTiming = 292,
@@ skipping 239 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h