Add file icons to chrome://downloads/ on the Mac. Add Skia helper CGImageToSkBitmap().

skia/ext/skia_utils_mac.h

 // Copyright (c) 2006-2008 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 SKIA_EXT_SKIA_UTILS_MAC_H_
 #define SKIA_EXT_SKIA_UTILS_MAC_H_
 
 #include <CoreGraphics/CGColor.h>
 
 #include "third_party/skia/include/core/SkColor.h"
 
 struct SkMatrix;
 struct SkIRect;
 struct SkPoint;
 struct SkRect;
+class SkBitmap;
+typedef struct _NSSize NSSize;
+
+#ifdef __OBJC__
+@class NSImage;
+#endif
 
 namespace gfx {
 
 // Converts a Skia point to a CoreGraphics CGPoint.
 // Both use same in-memory format.
 inline const CGPoint& SkPointToCGPoint(const SkPoint& point) {
   return reinterpret_cast<const CGPoint&>(point);
 }
 
 // Converts a CoreGraphics point to a Skia CGPoint.
@@ skipping 12 matching lines @@
 // Converts a Skia rect to a CoreGraphics CGRect.
 CGRect SkIRectToCGRect(const SkIRect& rect);
 CGRect SkRectToCGRect(const SkRect& rect);
 
 // Converts CGColorRef to the ARGB layout Skia expects.
 SkColor CGColorRefToSkColor(CGColorRef color);
 
 // Converts ARGB to CGColorRef.
 CGColorRef SkColorToCGColorRef(SkColor color);
 
+// Converts a CGImage to a SkBitmap.
+SkBitmap CGImageToSkBitmap(CGImageRef image);
+
+#ifdef __OBJC__
+// Draws an NSImage with a given size into a SkBitmap.
+SkBitmap NSImageToSkBitmap(NSImage* image, NSSize size, bool is_opaque);
+#endif
+
 }  // namespace gfx
 
 #endif  // SKIA_EXT_SKIA_UTILS_MAC_H_