Allows arbitrary scale factor in ImageSkia.

chrome/browser/extensions/extension_icon_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 "chrome/browser/extensions/extension_icon_image.h"
 
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "chrome/browser/extensions/image_loader.h"
@@ skipping 545 matching lines @@
   image.reset();
   extension = NULL;
 
   // Image skia should still be able to get previously loaded representation.
   representation = image_skia.GetRepresentation(1.0f);
 
   EXPECT_EQ(1.0f, representation.scale());
   EXPECT_EQ(16, representation.pixel_width());
   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(), bitmap_16));
 
-  // When requesting another representation, we should get blank image.
+  // When requesting another representation, we should not crash and return some
+  // image of the size. It could be blank or a rescale from the existing 1.0f
+  // icon.
   representation = image_skia.GetRepresentation(2.0f);
 
-  EXPECT_TRUE(gfx::BitmapsAreEqual(
-      representation.sk_bitmap(),
-      CreateBlankBitmapForScale(16, ui::SCALE_FACTOR_200P)));
+  EXPECT_EQ(16, representation.GetWidth());
+  EXPECT_EQ(16, representation.GetHeight());
+  EXPECT_EQ(2.0f, representation.scale());
 }