Return a enumeration of the state of handling of InputEvents.

third_party/WebKit/Source/core/page/DragController.cpp

Index: third_party/WebKit/Source/core/page/DragController.cpp
diff --git a/third_party/WebKit/Source/core/page/DragController.cpp b/third_party/WebKit/Source/core/page/DragController.cpp
index 672b9410852966e027c521a74dbb64443e40fb55..5f82680e1ec684190db9eabccacf9d107288525f 100644
--- a/third_party/WebKit/Source/core/page/DragController.cpp
+++ b/third_party/WebKit/Source/core/page/DragController.cpp
@@ -243,7 +243,7 @@ bool DragController::performDrag(DragData* dragData)
             // Sending an event can result in the destruction of the view and part.
             DataTransfer* dataTransfer = createDraggingDataTransfer(DataTransferReadable, dragData);
             dataTransfer->setSourceOperation(dragData->draggingSourceOperationMask());
-            preventedDefault = mainFrame->eventHandler().performDragAndDrop(createMouseEvent(dragData), dataTransfer);
+            preventedDefault = mainFrame->eventHandler().performDragAndDrop(createMouseEvent(dragData), dataTransfer) != WebInputEventResult::NotHandled;
             dataTransfer->setAccessPolicy(DataTransferNumb); // Invalidate clipboard here for security
         }
         if (preventedDefault) {
@@ -602,7 +602,7 @@ bool DragController::tryDHTMLDrag(DragData* dragData, DragOperation& operation)
     dataTransfer->setSourceOperation(srcOpMask);
 
     PlatformMouseEvent event = createMouseEvent(dragData);
-    if (!mainFrame->eventHandler().updateDragAndDrop(event, dataTransfer)) {
+    if (mainFrame->eventHandler().updateDragAndDrop(event, dataTransfer) == WebInputEventResult::NotHandled) {
         dataTransfer->setAccessPolicy(DataTransferNumb); // invalidate clipboard here for security
         return false;
     }