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

ui/gfx/image/image_unittest_util.cc

Index: ui/gfx/image/image_unittest_util.cc
diff --git a/ui/gfx/image/image_unittest_util.cc b/ui/gfx/image/image_unittest_util.cc
index fc4b6cf304a1c822e2ac9f1da4310e6e9f4d33d3..2f2dcf331ecc97276dd0b69c9e67964f3be8ffd4 100644
--- a/ui/gfx/image/image_unittest_util.cc
+++ b/ui/gfx/image/image_unittest_util.cc
@@ -84,14 +84,7 @@ bool IsEmpty(const gfx::Image& image) {
 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(