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

Source/core/frame/Screen.h

Index: Source/core/frame/Screen.h
diff --git a/Source/core/frame/Screen.h b/Source/core/frame/Screen.h
index cd7c03e9beb910607a7dcb125ab120b89177e1c0..c6caa4e74e54252f723f29a66c17bcf9f99d6390 100644
--- a/Source/core/frame/Screen.h
+++ b/Source/core/frame/Screen.h
@@ -48,14 +48,14 @@ public:
         return new Screen(frame);
     }
 
-    unsigned height() const;
-    unsigned width() const;
+    int height() const;
+    int width() const;
     unsigned colorDepth() const;
     unsigned pixelDepth() const;
     int availLeft() const;
     int availTop() const;
-    unsigned availHeight() const;
-    unsigned availWidth() const;
+    int availHeight() const;
+    int availWidth() const;
 
     DECLARE_VIRTUAL_TRACE();