Honor the wheel event canScroll bit instead of trying to infer it from the ctrl modifier

Source/platform/scroll/ScrollableArea.cpp

Index: Source/platform/scroll/ScrollableArea.cpp
diff --git a/Source/platform/scroll/ScrollableArea.cpp b/Source/platform/scroll/ScrollableArea.cpp
index f1704953f0a5b59e98c1fe0d1817a5658c6be6a6..aa26eabee126de3dd5f6b853c1bda4f6be4417d7 100644
--- a/Source/platform/scroll/ScrollableArea.cpp
+++ b/Source/platform/scroll/ScrollableArea.cpp
@@ -239,8 +239,8 @@ bool ScrollableArea::scrollBehaviorFromString(const String& behaviorString, Scro
 
 bool ScrollableArea::handleWheelEvent(const PlatformWheelEvent& wheelEvent)
 {
-    // ctrl+wheel events are used to trigger zooming, not scrolling.
-    if (wheelEvent.modifiers() & PlatformEvent::CtrlKey)
+    // Wheel events which do not scroll are used to trigger zooming.
+    if (wheelEvent.canScroll())
         return false;
 
     cancelProgrammaticScrollAnimation();