Remove keyboard event filtering in fullscreen

Source/core/page/EventHandler.h

Index: Source/core/page/EventHandler.h
diff --git a/Source/core/page/EventHandler.h b/Source/core/page/EventHandler.h
index bbf129caa715e64abaa6144064144b1535e30118..12165b17866b929fefe6b2eb5c91afc60835d1f6 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -58,7 +58,6 @@ template <typename EventType>
 class EventWithHitTestResults;
 class FloatPoint;
 class FloatQuad;
-class Fullscreen;
 class HTMLFrameSetElement;
 class HitTestRequest;
 class HitTestResult;
@@ -309,8 +308,6 @@ private:
 
     bool capturesDragging() const { return m_capturesDragging; }
 
-    bool isKeyEventAllowedInFullScreen(Fullscreen*, const PlatformKeyboardEvent&) const;
-
     bool handleGestureShowPress();
 
     bool handleScrollGestureOnResizer(Node*, const PlatformGestureEvent&);