Use native theme colors for textfields; etc.

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 "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/sys_color_change_listener.h"
 #include "ui/native_theme/native_theme_export.h"
 
 class SkCanvas;
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace ui {
 
 // This class supports drawing UI controls (like buttons, text fields, lists,
 // comboboxes, etc) that look like the native UI controls of the underlying
 // platform, such as Windows or Linux. It also supplies default colors for
 // dialog box backgrounds, etc., which are obtained from the system theme where
 // possible.
 //
 // The supported control types are listed in the Part enum.  These parts can be
 // in any state given by the State enum, where the actual definition of the
 // state is part-specific. The supported colors are listed in the ColorId enum.
 //
 // Some parts require more information than simply the state in order to be
 // drawn correctly, and this information is given to the Paint() method via the
 // ExtraParams union.  Each part that requires more information has its own
 // field in the union.
 //
 // NativeTheme also supports getting the default size of a given part with
 // the GetPartSize() method.
-class NATIVE_THEME_EXPORT NativeTheme {
+class NATIVE_THEME_EXPORT NativeTheme : public gfx::SysColorChangeListener {

[sky, 2012/12/04 22:38:14]

Since only windows actually implement OnSysColorChange(), can we move this to
NativeThemeWin?

[msw, 2012/12/05 02:09:56]

Done.

  public:
   // The part to be painted / sized.
   enum Part {
     kCheckbox,
     kInnerSpinButton,
     kMenuList,
     kMenuCheck,
     kMenuCheckBackground,
     kMenuPopupArrow,
     kMenuPopupBackground,
@@ skipping 187 matching lines @@
     kColorId_MenuSeparatorColor,
     kColorId_MenuBackgroundColor,
     kColorId_MenuBorderColor,
     // Label
     kColorId_LabelEnabledColor,
     kColorId_LabelDisabledColor,
     kColorId_LabelBackgroundColor,
     // Textfield
     kColorId_TextfieldDefaultColor,
     kColorId_TextfieldDefaultBackground,
+    kColorId_TextfieldReadOnlyColor,
+    kColorId_TextfieldReadOnlyBackground,
     kColorId_TextfieldSelectionColor,
     kColorId_TextfieldSelectionBackgroundFocused,
     kColorId_TextfieldSelectionBackgroundUnfocused,
     // TODO(benrg): move other hardcoded colors here.
   };
 
   // Return a color from the system theme.
   virtual SkColor GetSystemColor(ColorId color_id) const = 0;
 
   // Returns a shared instance of the native theme.
   // The returned object should not be deleted by the caller.  This function
   // is not thread safe and should only be called from the UI thread.
   // Each port of NativeTheme should provide its own implementation of this
   // function, returning the port's subclass.
   static NativeTheme* instance();
 
   static bool IsNewMenuStyleEnabled();
 
  protected:
   NativeTheme();
-  virtual ~NativeTheme() {}
+  virtual ~NativeTheme();
+
+  // gfx::SysColorChangeListener implementation:
+  virtual void OnSysColorChange() OVERRIDE;
+
+  gfx::ScopedSysColorChangeListener color_change_listener_;
 
   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_