Remove dependency on ui::ScaleFactor from ui/gfx

chrome/browser/thumbnails/simple_thumbnail_crop.cc

Index: chrome/browser/thumbnails/simple_thumbnail_crop.cc
diff --git a/chrome/browser/thumbnails/simple_thumbnail_crop.cc b/chrome/browser/thumbnails/simple_thumbnail_crop.cc
index c427b90f30c4d1701b6c70f3099bd982b65b1f15..c832925910414c72169e0961e25c0cfb1e100647 100644
--- a/chrome/browser/thumbnails/simple_thumbnail_crop.cc
+++ b/chrome/browser/thumbnails/simple_thumbnail_crop.cc
@@ -8,6 +8,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/color_utils.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/scrollbar_size.h"
 #include "ui/gfx/size_conversions.h"
@@ -130,7 +131,7 @@ gfx::Size SimpleThumbnailCrop::GetCopySizeForThumbnail(
       DLOG(WARNING) << "Unsupported scale factor. Use the same copy size as "
                     << "ui::SCALE_FACTOR_100P";
       copy_size = gfx::ToFlooredSize(gfx::ScaleSize(
-          copy_size, ui::GetMaxScaleFactor()));
+          copy_size, gfx::ImageSkia::GetMaxSupportedScale()));
       break;
   }
   return copy_size;
@@ -183,8 +184,7 @@ gfx::Size SimpleThumbnailCrop::ComputeTargetSizeAtMaximumScale(
     const gfx::Size& given_size) {
   // TODO(mazda|oshima): Update thumbnail when the max scale factor changes.
   // crbug.com/159157.
-  float max_scale_factor =
-      ui::GetScaleFactorScale(ui::GetMaxScaleFactor());
+  float max_scale_factor = gfx::ImageSkia::GetMaxSupportedScale();
   return gfx::ToFlooredSize(gfx::ScaleSize(given_size, max_scale_factor));
 }