Reduce hit test on ShowPress by moving event targeting to WebViewImpl

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index b2e91147ce635d4132727b17ed825571bf86d053..d3d7003869e802b9779418f06b71ace3c5eb1cc1 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -69,7 +69,6 @@
 #include "core/page/DragController.h"
 #include "core/page/DragState.h"
 #include "core/page/EditorClient.h"
-#include "core/page/EventWithHitTestResults.h"
 #include "core/page/FocusController.h"
 #include "core/page/FrameTree.h"
 #include "core/page/Page.h"
@@ -2061,7 +2060,7 @@ bool EventHandler::handleGestureShowPress()
     return false;
 }
 
-bool EventHandler::handleGestureEvent(const PlatformGestureEvent& gestureEvent)
+bool EventHandler::handleGestureEvent(const GestureEventWithHitTestResults& targetedEvent)
 {
     TRACE_EVENT0("input", "EventHandler::handleGestureEvent");
 
@@ -2072,14 +2071,12 @@ bool EventHandler::handleGestureEvent(const PlatformGestureEvent& gestureEvent)
     // the chain, doing a single-frame hit-test per frame. This matches handleWheelEvent.
     // Perhaps we could simplify things by rewriting scroll handling to work inner frame
     // out, and then unify with other gesture events.
-    if (gestureEvent.isScrollEvent())
-        return handleGestureScrollEvent(gestureEvent);
+    if (targetedEvent.event().isScrollEvent())
+        return handleGestureScrollEvent(targetedEvent.event());
 
-    // Non-scrolling related gesture events instead do a single cross-frame hit-test and
-    // jump directly to the inner most frame. This matches handleMousePressEvent etc.
-
-    // Hit test across all frames and do touch adjustment as necessary for the event type.
-    GestureEventWithHitTestResults targetedEvent = targetGestureEvent(gestureEvent);
+    // Non-scrolling related gesture events instead reuse the cross-frame hit-test from
+    // targetedEvent and jump directly to the inner most frame. This matches
+    // handleMousePressEvent etc.
 
     // Route to the correct frame.
     if (LocalFrame* innerFrame = targetedEvent.hitTestResult().innerNodeFrame())