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

ui/gfx/canvas_skia.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/canvas_skia.h"
 
 #include <limits>
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
@@ skipping 96 matching lines @@
 void CanvasSkia::Save() {
   canvas_->save();
 }
 
 void CanvasSkia::SaveLayerAlpha(uint8 alpha) {
   canvas_->saveLayerAlpha(NULL, 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);
 }
 
 void CanvasSkia::Restore() {
   canvas_->restore();
 }
 
 bool CanvasSkia::ClipRect(const gfx::Rect& rect) {
   return canvas_->clipRect(gfx::RectToSkRect(rect));
 }
@@ skipping 266 matching lines @@
 
 Canvas* Canvas::CreateCanvas() {
   return new CanvasSkia;
 }
 
 Canvas* Canvas::CreateCanvas(const gfx::Size& size, bool is_opaque) {
   return new CanvasSkia(size, is_opaque);
 }
 
 }  // namespace gfx