Remove last dependencies on ui/base from ui/gfx

ui/base/win/dpi_setup.cc

Index: ui/base/win/dpi_setup.cc
diff --git a/ui/base/win/dpi_setup.cc b/ui/base/win/dpi_setup.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b80b8126d068e3ac16371429d16caf360f3dcc6a
--- /dev/null
+++ b/ui/base/win/dpi_setup.cc
@@ -0,0 +1,26 @@
+// Copyright (c) 2013 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 "ui/base/win/dpi_setup.h"
+
+#include "ui/base/layout.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/win/dpi.h"
+
+namespace ui {
+namespace win {
+
+void InitDeviceScaleFactor() {
+  float scale = 1.0f;
+  if (gfx::IsHighDPIEnabled()) {
+    float scale = gfx::Display::HasForceDeviceScaleFactor() ?
+        gfx::Display::GetForcedDeviceScaleFactor() : gfx::GetDPIScale();
+    // Quantize to nearest supported scale factor.
+    scale = ui::GetImageScale(ui::GetSupportedScaleFactor(scale));
+  }
+  gfx::InitDeviceScaleFactor(scale);
+}
+
+}  // namespace win
+}  // namespace ui