Revert of "Implement the inert attribute"

third_party/WebKit/Source/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 1393 matching lines @@
     kV8MediaSession_PlaybackState_AttributeSetter = 1791,
     kV8MediaSession_SetActionHandler_Method = 1792,
     kWebNFCPush = 1793,
     kWebNFCCancelPush = 1794,
     kWebNFCWatch = 1795,
     kWebNFCCancelWatch = 1796,
     kAudioParamCancelAndHoldAtTime = 1797,
     kCSSValueUserModifyReadOnly = 1798,
     kCSSValueUserModifyReadWrite = 1799,
     kCSSValueUserModifyReadWritePlaintextOnly = 1800,
-    kV8TextDetector_Detect_Method = 1801,
     kCSSValueOnDemand = 1802,
     kServiceWorkerNavigationPreload = 1803,
     kFullscreenRequestWithPendingElement = 1804,
     kHTMLIFrameElementAllowfullscreenAttributeSetAfterContentLoad = 1805,
     kPointerEventSetCaptureOutsideDispatch = 1806,
     kNotificationPermissionRequestedInsecureOrigin = 1807,
     kV8DeprecatedStorageInfo_QueryUsageAndQuota_Method = 1808,
     kV8DeprecatedStorageInfo_RequestQuota_Method = 1809,
     kV8DeprecatedStorageQuota_QueryUsageAndQuota_Method = 1810,
     kV8DeprecatedStorageQuota_RequestQuota_Method = 1811,
@@ skipping 172 matching lines @@
     kCredentialManagerIdName = 1985,
     kCredentialManagerPasswordName = 1986,
     kCredentialManagerAdditionalData = 1987,
     kCredentialManagerCustomFetch = 1988,
     kNetInfoRtt = 1989,
     kNetInfoDownlink = 1990,
     kShapeDetection_BarcodeDetectorConstructor = 1991,
     kShapeDetection_FaceDetectorConstructor = 1992,
     kShapeDetection_TextDetectorConstructor = 1993,
     kCredentialManagerCredentialRequestOptionsOnlyUnmediated = 1994,
-    kInertAttribute = 1995,
+    // TODO(aboxhall): Reuse value 1995 when
+    // https://codereview.chromium.org/2088453002 is relanded.
     kPluginInstanceAccessFromIsolatedWorld = 1996,
     kPluginInstanceAccessFromMainWorld = 1997,
 
     // Add new features immediately above this line. Don't change assigned
     // numbers of any item, and don't reuse removed slots.
     // Also, run update_use_counter_feature_enum.py in
     // chromium/src/tools/metrics/histograms/ to update the UMA mapping.
     kNumberOfFeatures,  // This enum value must be last.
   };
 
@@ skipping 99 matching lines @@
     // Tracks what features/properties need to be reported to the legacy
     // histograms.
     BitVector feature_bits_;
     BitVector css_bits_;
   } legacy_counter_;
 };
 
 }  // namespace blink
 
 #endif  // UseCounter_h