Use CheckedNumeric when converting SkIRect to gfx::Rect.

ui/gfx/skia_util.h

 // 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.
 
 #ifndef UI_GFX_SKIA_UTIL_H_
 #define UI_GFX_SKIA_UTIL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 16 matching lines @@
 class RectF;
 class ShadowValue;
 class Transform;
 
 // Convert between Skia and gfx types.
 GFX_EXPORT SkPoint PointToSkPoint(const Point& point);
 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);
 GFX_EXPORT SizeF SkSizeToSizeF(const SkSize& size);
 GFX_EXPORT Size SkISizeToSize(const SkISize& size);
 
 GFX_EXPORT void QuadFToSkPoints(const gfx::QuadF& quad, SkPoint points[4]);
 
 GFX_EXPORT void TransformToFlattenedSkMatrix(const gfx::Transform& transform,
                                              SkMatrix* flattened);
@@ skipping 52 matching lines @@
 
 // Converts an hb_position_t to a Skia floating-point value.
 GFX_EXPORT SkScalar HarfBuzzUnitsToSkiaScalar(int value);
 
 // Converts an hb_position_t to a float.
 GFX_EXPORT float HarfBuzzUnitsToFloat(int value);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SKIA_UTIL_H_