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

ui/gfx/image/image_unittest.cc

 // Copyright (c) 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 "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_unittest_util.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #include "ui/gfx/gtk_util.h"
 #elif defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #include "skia/ext/skia_utils_mac.h"
 #endif
 
@@ skipping 236 matching lines @@
   const int height1 = 12;
   const int width2 = 20;
   const int height2 = 24;
 
   std::vector<const SkBitmap*> bitmaps;
   bitmaps.push_back(gt::CreateBitmap(width1, height1));
   bitmaps.push_back(gt::CreateBitmap(width2, height2));
   gfx::Image image(bitmaps);
 
   EXPECT_EQ(1u, image.RepresentationCount());
-  EXPECT_EQ(2u, image.GetNumberOfSkBitmaps());
+  const std::vector<const SkBitmap*>& image_bitmaps =
+      image.ToImageSkia()->bitmaps();
+  EXPECT_EQ(2u, image_bitmaps.size());
 
-  const SkBitmap* bitmap1 = image.GetSkBitmapAtIndex(0);
+  const SkBitmap* bitmap1 = image_bitmaps[0];
   EXPECT_TRUE(bitmap1);
-  const SkBitmap* bitmap2 = image.GetSkBitmapAtIndex(1);
+  const SkBitmap* bitmap2 = image_bitmaps[1];
   EXPECT_TRUE(bitmap2);
 
   if (bitmap1->width() == width1) {
     EXPECT_EQ(bitmap1->height(), height1);
     EXPECT_EQ(bitmap2->width(), width2);
     EXPECT_EQ(bitmap2->height(), height2);
   } else {
     EXPECT_EQ(bitmap1->width(), width2);
     EXPECT_EQ(bitmap1->height(), height2);
     EXPECT_EQ(bitmap2->width(), width1);
     EXPECT_EQ(bitmap2->height(), height1);
   }
 
   // Sanity check.
   EXPECT_EQ(1u, image.RepresentationCount());
-  EXPECT_EQ(2u, image.GetNumberOfSkBitmaps());
+  EXPECT_EQ(2u, image.ToImageSkia()->bitmaps().size());
 }
 
 // Integration tests with UI toolkit frameworks require linking against the
 // Views library and cannot be here (gfx_unittests doesn't include it). They
 // instead live in /chrome/browser/ui/tests/ui_gfx_image_unittest.cc.
 
 }  // namespace