Revert of "Implement the inert attribute"

third_party/WebKit/Source/core/frame/UseCounter.h

Index: third_party/WebKit/Source/core/frame/UseCounter.h
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.h b/third_party/WebKit/Source/core/frame/UseCounter.h
index 4fadc0de2dcbc4b0cf74aab634fa012da466ddcb..011b6e287930ce0b63b3bd182dab8c36bcf1376e 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -1411,7 +1411,6 @@ class CORE_EXPORT UseCounter {
     kCSSValueUserModifyReadOnly = 1798,
     kCSSValueUserModifyReadWrite = 1799,
     kCSSValueUserModifyReadWritePlaintextOnly = 1800,
-    kV8TextDetector_Detect_Method = 1801,
     kCSSValueOnDemand = 1802,
     kServiceWorkerNavigationPreload = 1803,
     kFullscreenRequestWithPendingElement = 1804,
@@ -1604,7 +1603,8 @@ class CORE_EXPORT UseCounter {
     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,