Add support for multi resolution icons

ui/gfx/image_unittest.cc

Index: ui/gfx/image_unittest.cc
diff --git a/ui/gfx/image_unittest.cc b/ui/gfx/image_unittest.cc
index 6f41bfe7b78fe220ca3bc740a84dbec1dcab8363..6c1098a96fe8e9f18dcb734383d4fa1c86416553 100644
--- a/ui/gfx/image_unittest.cc
+++ b/ui/gfx/image_unittest.cc
@@ -34,7 +34,7 @@ class ImageTest : public testing::Test {
 namespace gt = gfx::test;
 
 TEST_F(ImageTest, SkiaToSkia) {
-  gfx::Image image(gt::CreateBitmap());
+  gfx::Image image(gt::CreateBitmap(25, 25));
   const SkBitmap* bitmap = static_cast<const SkBitmap*>(image);
   EXPECT_TRUE(bitmap);
   EXPECT_FALSE(bitmap->isNull());
@@ -52,7 +52,7 @@ TEST_F(ImageTest, SkiaToSkia) {
 }
 
 TEST_F(ImageTest, SkiaToSkiaRef) {
-  gfx::Image image(gt::CreateBitmap());
+  gfx::Image image(gt::CreateBitmap(25, 25));
 
   const SkBitmap& bitmap = static_cast<const SkBitmap&>(image);
   EXPECT_FALSE(bitmap.isNull());
@@ -68,7 +68,7 @@ TEST_F(ImageTest, SkiaToSkiaRef) {
 }
 
 TEST_F(ImageTest, SkiaToPlatform) {
-  gfx::Image image(gt::CreateBitmap());
+  gfx::Image image(gt::CreateBitmap(25, 25));
   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 
   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kSkBitmapRep));
@@ -131,7 +131,7 @@ TEST_F(ImageTest, CheckSkiaColor) {
 TEST_F(ImageTest, SwapRepresentations) {
   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 
-  gfx::Image image1(gt::CreateBitmap());
+  gfx::Image image1(gt::CreateBitmap(25, 25));
   const SkBitmap* bitmap1 = image1;
   EXPECT_EQ(1U, GetRepCount(image1));
 
@@ -149,6 +149,41 @@ TEST_F(ImageTest, SwapRepresentations) {
   EXPECT_EQ(1U, GetRepCount(image2));
 }
 
+TEST_F(ImageTest, MultiResolutionSkBitmap) {
+  const int width1 = 10;
+  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, GetRepCount(image));
+  EXPECT_EQ(2u, image.GetNumberOfSkBitmaps());
+
+  const SkBitmap* bitmap1 = image.GetSkBitmapAtIndex(0);
+  EXPECT_TRUE(bitmap1);
+  const SkBitmap* bitmap2 = image.GetSkBitmapAtIndex(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, GetRepCount(image));
+  EXPECT_EQ(2u, image.GetNumberOfSkBitmaps());
+}
+
 // 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.