Add favicons to tabs on the Mac

skia/ext/skia_utils_mac.mm

 // 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.
 
 #include "skia/ext/skia_utils_mac.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/scoped_cftyperef.h"
 #include "base/scoped_ptr.h"
 #include "skia/ext/bitmap_platform_device_mac.h"
+#include "third_party/skia/include/utils/mac/SkCGUtils.h"
 
 namespace gfx {
 
 CGAffineTransform SkMatrixToCGAffineTransform(const SkMatrix& matrix) {
   // CGAffineTransforms don't support perspective transforms, so make sure
   // we don't get those.
   DCHECK(matrix[SkMatrix::kMPersp0] == 0.0f);
   DCHECK(matrix[SkMatrix::kMPersp1] == 0.0f);
   DCHECK(matrix[SkMatrix::kMPersp2] == 1.0f);
 
@@ skipping 135 matching lines @@
            fromRect:NSZeroRect
           operation:NSCompositeCopy
            fraction:1.0];
 
   // Done drawing, restore context.
   [NSGraphicsContext setCurrentContext:current_context];
 
   return bitmap;
 }
 
+NSImage* SkBitmapToNSImage(const SkBitmap& skiaBitmap) {
+  // First convert SkBitmap to CGImageRef.
+  CGImageRef cgimage = SkCreateCGImageRef(skiaBitmap);
+
+  // Now convert to NSImage.
+  NSBitmapImageRep* bitmap = [[[NSBitmapImageRep alloc]
+                                   initWithCGImage:cgimage] autorelease];
+  CFRelease(cgimage);
+  NSImage* image = [[[NSImage alloc] init] autorelease];
+  [image addRepresentation:bitmap];
+  return image;
+}
+
 }  // namespace gfx