Add LargeIconCache and LargeIconServiceFactory for iOS.

skia/ext/skia_utils_ios.mm

Index: skia/ext/skia_utils_ios.mm
diff --git a/skia/ext/skia_utils_ios.mm b/skia/ext/skia_utils_ios.mm
index 5655d22a5627ef98a19b4d07739d2fa86447346d..0d146076f20f9bb7ea768c585c5039bf2add604d 100644
--- a/skia/ext/skia_utils_ios.mm
+++ b/skia/ext/skia_utils_ios.mm
@@ -123,4 +123,11 @@ std::vector<SkBitmap> ImageDataToSkBitmaps(NSData* image_data) {
   return frames;
 }
 
+UIColor* ColorFromSkColor(SkColor color, CGFloat alpha) {
+  return [UIColor colorWithRed:SkColorGetR(color) / 255.0f
+                         green:SkColorGetG(color) / 255.0f
+                          blue:SkColorGetB(color) / 255.0f
+                         alpha:alpha];

[Justin Novosad, 2015/10/30 18:18:13]

SkColor stores an alpha value, which this method completely ignores.  Are you
sure this is the right thing to do here?

[justincohen, 2015/10/30 19:43:24]

Probably not -- changed to use |color|'s alpha instead.

+}
+
 }  // namespace gfx