Add LargeIconCache and LargeIconServiceFactory for iOS.

skia/ext/skia_utils_ios.mm

 // Copyright 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.
 
 #include "skia/ext/skia_utils_ios.h"
 
 #import <ImageIO/ImageIO.h>
 #import <UIKit/UIKit.h>
 
 #include "base/ios/ios_util.h"
@@ skipping 105 matching lines @@
     const SkBitmap bitmap = CGImageToSkBitmap(cg_image, size, false);
     if (!bitmap.empty())
       frames.push_back(bitmap);
   }
 
   DLOG_IF(WARNING, frames.size() != count) << "Only decoded " << frames.size()
       << " frames for " << count << " expected.";
   return frames;
 }
 
+UIColor* UIColorFromSkColor(SkColor color) {
+  return [UIColor colorWithRed:SkColorGetR(color) / 255.0f
+                         green:SkColorGetG(color) / 255.0f
+                          blue:SkColorGetB(color) / 255.0f
+                         alpha:SkColorGetA(color) / 255.0f];
+}
+
 }  // namespace gfx