Apply skew on both axes together rather than sequentially on Compositor thread

ui/gfx/transform.h

Index: ui/gfx/transform.h
diff --git a/ui/gfx/transform.h b/ui/gfx/transform.h
index 55ab93867ca66e79c5138e9183ea6e9d2b5a8064..20740ad7ae925dd029d85c3694a4a8670fc7f602 100644
--- a/ui/gfx/transform.h
+++ b/ui/gfx/transform.h
@@ -101,8 +101,7 @@ class GFX_EXPORT Transform {
 
   // Applies the current transformation on a skew and assigns the result
   // to |this|.
-  void SkewX(double angle_x);
-  void SkewY(double angle_y);
+  void Skew(double angle_x, double angle_y);
 
   // Applies the current transformation on a perspective transform and assigns
   // the result to |this|.