Always add 100P scale format in the supported format list.

ui/gfx/image/image_unittest_util.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.
 
 // Because the unit tests for gfx::Image are spread across multiple
 // implementation files, this header contains the reusable components.
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/base/layout.h"
 #include "ui/gfx/image/image_unittest_util.h"
@@ skipping 66 matching lines @@
 
 bool IsEmpty(const gfx::Image& image) {
   const SkBitmap& bmp = *image.ToSkBitmap();
   return bmp.isNull() ||
          (bmp.width() == 0 && bmp.height() == 0);
 }
 
 PlatformImage CreatePlatformImage() {
   const SkBitmap bitmap(CreateBitmap(25, 25));
 #if defined(OS_IOS)
-  // iOS only supports one scale factor.
-  std::vector<ui::ScaleFactor> supported_scale_factors =
-      ui::GetSupportedScaleFactors();
-  DCHECK_EQ(1U, supported_scale_factors.size());
-  if (supported_scale_factors.size() < 1)
-    return nil;
-
-  ui::ScaleFactor scale_factor = supported_scale_factors[0];
+  ui::ScaleFactor scale_factor = ui::GetMaxScaleFactor();
   float scale = ui::GetScaleFactorScale(scale_factor);
 
   base::mac::ScopedCFTypeRef<CGColorSpaceRef> color_space(
       CGColorSpaceCreateDeviceRGB());
   UIImage* image =
       gfx::SkBitmapToUIImageWithColorSpace(bitmap, scale, color_space);
   base::mac::NSObjectRetain(image);
   return image;
 #elif defined(OS_MACOSX)
   NSImage* image = gfx::SkBitmapToNSImage(bitmap);
@@ skipping 85 matching lines @@
 bool PlatformImagesEqual(PlatformImage image1, PlatformImage image2) {
 #if defined(OS_MACOSX) || defined(TOOLKIT_GTK)
   return image1 == image2;
 #else
   return image1.getPixels() == image2.getPixels();
 #endif
 }
 
 }  // namespace test
 }  // namespace gfx