Changes look for scrollbars on windows (2)

ui/native_theme/native_theme.h

 // 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.
 
 #ifndef UI_NATIVE_THEME_NATIVE_THEME_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_H_
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/native_theme/native_theme_export.h"
@@ skipping 60 matching lines @@
     kTabPanelBackground,
     kTextField,
     kTrackbarThumb,
     kTrackbarTrack,
     kWindowResizeGripper,
     kMaxPart,
   };
 
   // The state of the part.
   enum State {
-    kDisabled,
-    kHovered,
-    kNormal,
-    kPressed,
-    kMaxState,
+    // IDs defined as specific values for use in arrays.
+    kDisabled = 0,
+    kHovered  = 1,
+    kNormal   = 2,
+    kPressed  = 3,
+    kMaxState = 4,
   };
 
   // Each structure below holds extra information needed when painting a given
   // part.
 
   struct ButtonExtraParams {
     bool checked;
     bool indeterminate;  // Whether the button state is indeterminate.
     bool is_default;  // Whether the button is default button.
     bool is_focused;
@@ skipping 200 matching lines @@
   unsigned int thumb_inactive_color_;
   unsigned int thumb_active_color_;
   unsigned int track_color_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTheme);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_H_