Remove setting cancelBubble to false.

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 1001 matching lines @@
     During_Microtask_Confirm = 1335,
     During_Microtask_Print = 1336,
     During_Microtask_Prompt = 1337,
     During_Microtask_SyncXHR = 1338,
     CredentialManagerGetReturnedCredential = 1342,
     GeolocationInsecureOriginDeprecatedNotRemoved = 1343,
     GeolocationInsecureOriginIframeDeprecatedNotRemoved = 1344,
     ProgressElementWithNoneAppearance = 1345,
     ProgressElementWithProgressBarAppearance = 1346,
     PointerEventAddListenerCount = 1347,
-    EventCancelBubbleAffected = 1348,
-    EventCancelBubbleWasChangedToTrue = 1349,
     EventCancelBubbleWasChangedToFalse = 1350,
     CSSValueAppearanceNone = 1351,
     CSSValueAppearanceNotNone = 1352,
     CSSValueAppearanceOthers = 1353,
     CSSValueAppearanceButton = 1354,
     CSSValueAppearanceCaret = 1355,
     CSSValueAppearanceCheckbox = 1356,
     CSSValueAppearanceMenulist = 1357,
     CSSValueAppearanceMenulistButton = 1358,
     CSSValueAppearanceListbox = 1359,
@@ skipping 489 matching lines @@
     // Tracks what features/properties need to be reported to the legacy
     // histograms.
     BitVector m_featureBits;
     BitVector m_CSSBits;
   } m_legacyCounter;
 };
 
 }  // namespace blink
 
 #endif  // UseCounter_h