Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

core/events/MouseEvent.idl

Index: core/events/MouseEvent.idl
diff --git a/core/events/MouseEvent.idl b/core/events/MouseEvent.idl
index fbdeaa34267f00d851e05c69d6154cddb4f9afa3..0f4eab1985cb2953ebd86d4c50c9fbae9b2ac537 100644
--- a/core/events/MouseEvent.idl
+++ b/core/events/MouseEvent.idl
@@ -34,7 +34,7 @@
     readonly attribute short            button;
     readonly attribute unsigned short   buttons;
     readonly attribute EventTarget?     relatedTarget;
-    // TODO(philipj): boolean getModifierState(DOMString keyArg);
+    boolean getModifierState(DOMString keyArg);
 
     // https://w3c.github.io/uievents/#idl-interface-MouseEvent-initializers
     // TODO(philipj): None of the initMouseEvent() arguments should be optional.
@@ -74,11 +74,6 @@
     [MeasureAs=MouseEventFromElement] readonly attribute Node fromElement;
     [MeasureAs=MouseEventToElement] readonly attribute Node toElement;
     [MeasureAs=MouseEventWhich] readonly attribute long which;
-    [DeprecateAs=PrefixedMouseEventMovementX, ImplementedAs=movementX] readonly attribute long webkitMovementX;
-    [DeprecateAs=PrefixedMouseEventMovementY, ImplementedAs=movementY] readonly attribute long webkitMovementY;
     [Measure] readonly attribute long layerX;
     [Measure] readonly attribute long layerY;
-
-    // FIXME: dataTransfer belongs on the DragEvent interface. crbug.com/498504
-    readonly attribute DataTransfer dataTransfer;
 };