Use ImageSkiaSource to create ImageSkia from ImagePNGReps

ui/gfx/image/image_unittest.cc

Index: ui/gfx/image/image_unittest.cc
diff --git a/ui/gfx/image/image_unittest.cc b/ui/gfx/image/image_unittest.cc
index a0fbe3e42bb137e96764bd1d3873d44a7be972b4..ca9efa0003c4edde4e552ab5164bef2f652674ff 100644
--- a/ui/gfx/image/image_unittest.cc
+++ b/ui/gfx/image/image_unittest.cc
@@ -243,12 +243,24 @@ TEST_F(ImageTest, MultiResolutionPNGToImageSkia) {
   scales.push_back(1.0f);
   scales.push_back(2.0f);
   gfx::ImageSkia image_skia = image.AsImageSkia();
-  EXPECT_TRUE(gt::ImageSkiaStructureMatches(image_skia, kSize1x, kSize1x,
-                                            scales));
   EXPECT_TRUE(gt::IsEqual(bytes1x,
       image_skia.GetRepresentation(1.0f).sk_bitmap()));
   EXPECT_TRUE(gt::IsEqual(bytes2x,
       image_skia.GetRepresentation(2.0f).sk_bitmap()));
+  EXPECT_TRUE(gt::ImageSkiaStructureMatches(image_skia, kSize1x, kSize1x,
+                                            scales));
+#if !defined(OS_IOS)
+  // IOS does not support arbitrary scale factors.
+  gfx::ImageSkiaRep rep_1_6x = image_skia.GetRepresentation(1.6f);
+  ASSERT_FALSE(rep_1_6x.is_null());
+  ASSERT_EQ(1.6f, rep_1_6x.scale());
+  EXPECT_EQ("40x40", rep_1_6x.pixel_size().ToString());
+
+  gfx::ImageSkiaRep rep_0_8x = image_skia.GetRepresentation(0.8f);
+  ASSERT_FALSE(rep_0_8x.is_null());
+  ASSERT_EQ(0.8f, rep_0_8x.scale());
+  EXPECT_EQ("20x20", rep_0_8x.pixel_size().ToString());
+#endif
 }
 
 TEST_F(ImageTest, MultiResolutionPNGToPlatform) {