Remove all uses of skia::RefPtr and stale includes

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 f10db7ec40e0aad838692a004cae4bbe04d5d4b4..eb7b82f30d33390534331b82697136375146ed37 100644
--- a/ui/native_theme/native_theme_win.cc
+++ b/ui/native_theme/native_theme_win.cc
@@ -22,6 +22,7 @@
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
+#include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/display/win/dpi.h"
@@ -675,7 +676,7 @@ void NativeThemeWin::PaintIndirect(SkCanvas* canvas,
   //                  keeping a cache of the resulting bitmaps.
 
   // Create an offscreen canvas that is backed by an HDC.
-  skia::RefPtr<skia::BitmapPlatformDevice> device = skia::AdoptRef(
+  sk_sp<skia::BitmapPlatformDevice> device(
       skia::BitmapPlatformDevice::Create(
           rect.width(), rect.height(), false, NULL));
   DCHECK(device);