Use CheckedNumeric when converting SkIRect to gfx::Rect.

ui/gfx/skia_util.h

Index: ui/gfx/skia_util.h
diff --git a/ui/gfx/skia_util.h b/ui/gfx/skia_util.h
index fbd1909c06831346079d252c2e673f2d5b6d6d6b..d84e9e90b283a0a3ab8ed86f4af1b3072406de3a 100644
--- a/ui/gfx/skia_util.h
+++ b/ui/gfx/skia_util.h
@@ -34,7 +34,9 @@ GFX_EXPORT SkIPoint PointToSkIPoint(const Point& point);
 GFX_EXPORT SkPoint PointFToSkPoint(const PointF& point);
 GFX_EXPORT SkRect RectToSkRect(const Rect& rect);
 GFX_EXPORT SkIRect RectToSkIRect(const Rect& rect);
+GFX_EXPORT SkIRect RectToSkIRectChecked(const Rect& rect);
 GFX_EXPORT Rect SkIRectToRect(const SkIRect& rect);
+GFX_EXPORT Rect SkIRectToRectChecked(const SkIRect& rect);
 GFX_EXPORT SkRect RectFToSkRect(const RectF& rect);
 GFX_EXPORT RectF SkRectToRectF(const SkRect& rect);
 GFX_EXPORT SkSize SizeFToSkSize(const SizeF& size);