Reduce hit test on ShowPress by moving event targeting to WebViewImpl

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 ecafd3154d6f8f236d90f6642417740bff4f7e5c..63c698c70adea09365cd9addee786dabf5081ef0 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -29,6 +29,7 @@
 #include "core/editing/TextGranularity.h"
 #include "core/events/TextEventInputType.h"
 #include "core/page/DragActions.h"
+#include "core/page/EventWithHitTestResults.h"
 #include "core/page/FocusType.h"
 #include "core/rendering/HitTestRequest.h"
 #include "core/rendering/style/RenderStyleConstants.h"
@@ -79,9 +80,6 @@ class VisibleSelection;
 class WheelEvent;
 class Widget;
 
-typedef EventWithHitTestResults<PlatformGestureEvent> GestureEventWithHitTestResults;
-typedef EventWithHitTestResults<PlatformMouseEvent> MouseEventWithHitTestResults;
-
 enum AppendTrailingWhitespace { ShouldAppendTrailingWhitespace, DontAppendTrailingWhitespace };
 enum CheckDragHysteresis { ShouldCheckDragHysteresis, DontCheckDragHysteresis };
 
@@ -146,6 +144,7 @@ public:
 
     // Called on the local root frame exactly once per gesture event.
     bool handleGestureEvent(const PlatformGestureEvent&);
+    bool handleGestureEvent(const GestureEventWithHitTestResults&);
 
     // Hit-test the provided (non-scroll) gesture event, applying touch-adjustment and updating
     // hover/active state across all frames if necessary. This should be called at most once