Screen attribute availWidth/availHeight/width/height type changed to long

Source/core/frame/Screen.idl

Index: Source/core/frame/Screen.idl
diff --git a/Source/core/frame/Screen.idl b/Source/core/frame/Screen.idl
index 675d000890e1c57128ac089264d19666ab0a66e1..33d9afc799469e6e005aef8946a6d712fcb9e386 100644
--- a/Source/core/frame/Screen.idl
+++ b/Source/core/frame/Screen.idl
@@ -31,11 +31,10 @@
 [
     GarbageCollected,
 ] interface Screen {
-    // TODO(philipj): availWidth/availHeight/width/height should not be unsigned.
-    readonly attribute unsigned long availWidth;
-    readonly attribute unsigned long availHeight;
-    readonly attribute unsigned long width;
-    readonly attribute unsigned long height;
+    readonly attribute long availWidth;
+    readonly attribute long availHeight;
+    readonly attribute long width;
+    readonly attribute long height;
     readonly attribute unsigned long colorDepth;
     readonly attribute unsigned long pixelDepth;