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

ui/gfx/native_theme_base.cc

Index: ui/gfx/native_theme_base.cc
diff --git a/ui/gfx/native_theme_base.cc b/ui/gfx/native_theme_base.cc
index 2448d1826704853351c79bade2f1a3969b4f4538..27872e39aace0416992891578e9ace5f619d9e7b 100644
--- a/ui/gfx/native_theme_base.cc
+++ b/ui/gfx/native_theme_base.cc
@@ -520,10 +520,8 @@ void NativeThemeBase::PaintButton(SkCanvas* canvas,
   const int kLightEnd = state == kPressed ? 1 : 0;
   const int kDarkEnd = !kLightEnd;
   SkPoint gradient_bounds[2];
-  gradient_bounds[kLightEnd].set(SkIntToScalar(rect.x()),
-                                 SkIntToScalar(rect.y()));
-  gradient_bounds[kDarkEnd].set(SkIntToScalar(rect.x()),
-                                SkIntToScalar(kBottom - 1));
+  gradient_bounds[kLightEnd].iset(rect.x(), rect.y());
+  gradient_bounds[kDarkEnd].iset(rect.x(), kBottom - 1);
   SkColor colors[2];
   colors[0] = light_color;
   colors[1] = base_color;
@@ -814,15 +812,13 @@ void NativeThemeBase::PaintProgressBar(SkCanvas* canvas,
 
   int dest_right_border_width = static_cast<int>(right_border_image->width() *
       tile_scale);
-  dest_rect.set(SkIntToScalar(rect.right() - dest_right_border_width),
-      SkIntToScalar(rect.y()),
-      SkIntToScalar(rect.right()),
-      SkIntToScalar(rect.bottom()));
+  dest_rect.iset(rect.right() - dest_right_border_width, rect.y(), rect.right(),
+                 rect.bottom());
   canvas->drawBitmapRect(*right_border_image, NULL, dest_rect);
 }
 
-bool NativeThemeBase::IntersectsClipRectInt(
-    SkCanvas* canvas, int x, int y, int w, int h) const {
+bool NativeThemeBase::IntersectsClipRectInt(SkCanvas* canvas,
+                                            int x, int y, int w, int h) const {
   SkRect clip;
   return canvas->getClipBounds(&clip) &&
       clip.intersect(SkIntToScalar(x), SkIntToScalar(y), SkIntToScalar(x + w),