ui: Move NativeTheme files into ui/base/native_theme/ directory.

ui/base/native_theme/native_theme_base.cc

 // Copyright (c) 2012 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/gfx/native_theme_base.h"
+#include "ui/base/native_theme/native_theme_base.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "grit/gfx_resources.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
@@ skipping 28 matching lines @@
   if (adjusted.l > 1.0)
     adjusted.l = 1.0;
   if (adjusted.l < 0.0)
     adjusted.l = 0.0;
 
   return color_utils::HSLToSkColor(adjusted, alpha);
 }
 
 }  // namespace
 
-namespace gfx {
+namespace ui {
 
 gfx::Size NativeThemeBase::GetPartSize(Part part,
                                        State state,
                                        const ExtraParams& extra) const {
   switch (part) {
     // Please keep these in the order of NativeTheme::Part.
     case kCheckbox:
       return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight);
     case kInnerSpinButton:
       return gfx::Size(scrollbar_width_, 0);
@@ skipping 898 matching lines @@
   // default GTK themes.
   SkScalar min_diff = Clamp((hsv1[1] + hsv2[1]) * 1.2f, 0.28f, 0.5f);
   SkScalar diff = Clamp(fabs(hsv1[2] - hsv2[2]) / 2, min_diff, 0.5f);
 
   if (hsv1[2] + hsv2[2] > 1.0)
     diff = -diff;
 
   return SaturateAndBrighten(hsv2, -0.2f, diff);
 }
 
-}  // namespace gfx
+}  // namespace ui