Expose array of bitmaps contained by gfx::Image similar to NSImage

chrome/browser/web_applications/web_app_mac.mm

Index: chrome/browser/web_applications/web_app_mac.mm
diff --git a/chrome/browser/web_applications/web_app_mac.mm b/chrome/browser/web_applications/web_app_mac.mm
index e5a5ea4cb637f5cc5953df175dae2c4f09d8f87f..bcc7991e1a58ca84d51bb5334f0560cee095a6cb 100644
--- a/chrome/browser/web_applications/web_app_mac.mm
+++ b/chrome/browser/web_applications/web_app_mac.mm
@@ -22,6 +22,7 @@
 #include "skia/ext/skia_utils_mac.h"
 #include "third_party/icon_family/IconFamily.h"
 #include "ui/base/l10n/l10n_util_mac.h"
+#include "ui/gfx/image/image_skia.h"
 
 namespace {
 
@@ -197,9 +198,10 @@ bool WebAppShortcutCreator::UpdateIcon(const FilePath& app_path) const {
 
   scoped_nsobject<IconFamily> icon_family([[IconFamily alloc] init]);
   bool image_added = false;
-  for (size_t i = 0; i < info_.favicon.GetNumberOfSkBitmaps(); ++i) {
-    NSBitmapImageRep* image_rep =
-        SkBitmapToImageRep(*info_.favicon.GetSkBitmapAtIndex(i));
+  const std::vector<const SkBitmap*>& bitmaps =
+      info_.favicon.ToImageSkia()->bitmaps();
+  for (size_t i = 0; i < bitmaps.size(); ++i) {
+    NSBitmapImageRep* image_rep = SkBitmapToImageRep(*bitmaps[i]);
     if (!image_rep)
       continue;