Move Windows DPI Code from ui/gfx to ui/display

ui/native_theme/native_theme_win.cc

Index: ui/native_theme/native_theme_win.cc
diff --git a/ui/native_theme/native_theme_win.cc b/ui/native_theme/native_theme_win.cc
index da3ae0c9ee2c6a03bc25b4fb5f3a5a3fc5ff379c..f10db7ec40e0aad838692a004cae4bbe04d5d4b4 100644
--- a/ui/native_theme/native_theme_win.cc
+++ b/ui/native_theme/native_theme_win.cc
@@ -24,13 +24,13 @@
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/base/material_design/material_design_controller.h"
+#include "ui/display/win/dpi.h"
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/skia_util.h"
-#include "ui/gfx/win/dpi.h"
 #include "ui/native_theme/common_theme.h"
 
 // This was removed from Winvers.h but is still used.
@@ -203,7 +203,7 @@ gfx::Size NativeThemeWin::GetPartSize(Part part,
     case kScrollbarVerticalThumb:
     case kScrollbarHorizontalTrack:
     case kScrollbarVerticalTrack: {
-      int size = gfx::win::GetSystemMetricsInDIP(SM_CXVSCROLL);
+      int size = display::win::GetSystemMetricsInDIP(SM_CXVSCROLL);
       if (size == 0)
         size = 17;
       return gfx::Size(size, size);