Remove keyboard event filtering in fullscreen

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 286 matching lines @@
         NamedNodeMapGetNamedItem = 306,
         NamedNodeMapSetNamedItem = 307,
         NamedNodeMapRemoveNamedItem = 308,
         NamedNodeMapItem = 309,
         NamedNodeMapGetNamedItemNS = 310,
         NamedNodeMapSetNamedItemNS = 311,
         NamedNodeMapRemoveNamedItemNS = 312,
         XHRProgressEventPosition = 316,
         XHRProgressEventTotalSize = 317,
         PrefixedDocumentIsFullscreen = 318,
-        PrefixedDocumentFullScreenKeyboardInputAllowed = 319,
         PrefixedDocumentCurrentFullScreenElement = 320,
         PrefixedDocumentCancelFullScreen = 321,
         PrefixedDocumentFullscreenEnabled = 322,
         PrefixedDocumentFullscreenElement = 323,
         PrefixedDocumentExitFullscreen = 324,
         // The above items are available in M35 branch.
 
         SVGForeignObjectElement = 325,
         SelectionSetPosition = 327,
         AnimationPlayerFinishEvent = 328,
@@ skipping 123 matching lines @@
         CSSSelectorPseudoUnresolved = 466,
         CSSSelectorPseudoShadow = 467,
         CSSSelectorPseudoContent = 468,
         CSSSelectorPseudoHost = 469,
         CSSSelectorPseudoHostContext = 470,
         CSSDeepCombinator = 471,
         SyncXHRWithCredentials = 472,
         // The above items are available in M37 branch.
 
         UseAsm = 473,
-        KeyEventNotAllowedInFullScreen = 474,
         DOMWindowOpen = 475,
         DOMWindowOpenFeatures = 476,
         MediaStreamTrackGetSources = 478,
         AspectRatioFlexItem = 479,
         DetailsElement = 480,
         DialogElement = 481,
         MapElement = 482,
         MeterElement = 483,
         ProgressElement = 484,
         VideoFullscreenAllowedExemption = 485,
@@ skipping 159 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h