ui: Let skia do the conversion work for us by using the integer version of set() function.

ui/gfx/canvas_skia.cc

Index: ui/gfx/canvas_skia.cc
diff --git a/ui/gfx/canvas_skia.cc b/ui/gfx/canvas_skia.cc
index 6e44931f5b92953d388b135cd13c38b259c77702..5ae821c1c9b9dd662fa71be2a86f232f141cc89a 100644
--- a/ui/gfx/canvas_skia.cc
+++ b/ui/gfx/canvas_skia.cc
@@ -114,11 +114,7 @@ void CanvasSkia::SaveLayerAlpha(uint8 alpha) {
 
 
 void CanvasSkia::SaveLayerAlpha(uint8 alpha, const gfx::Rect& layer_bounds) {
-  SkRect bounds;
-  bounds.set(SkIntToScalar(layer_bounds.x()),
-             SkIntToScalar(layer_bounds.y()),
-             SkIntToScalar(layer_bounds.right()),
-             SkIntToScalar(layer_bounds.bottom()));
+  SkRect bounds(gfx::RectToSkRect(layer_bounds));
   canvas_->saveLayerAlpha(&bounds, alpha);
 }