Views: Draw Textfield selected text in gray when top-level Widget loses focus.

ui/native_theme/native_theme_win.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_WIN_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_WIN_H_
 
 // A wrapper class for working with custom XP/Vista themes provided in
 // uxtheme.dll.  This is a singleton class that can be grabbed using
 // NativeThemeWin::instance().
@@ skipping 268 matching lines @@
                            const gfx::Rect& rect) const;
 
   // Get the windows theme name/part/state.  These three helper functions are
   // used only by GetPartSize(), as each of the corresponding PaintXXX()
   // methods do further validation of the part and state that is required for
   // getting the size.
   static ThemeName GetThemeName(Part part);
   static int GetWindowsPart(Part part, State state, const ExtraParams& extra);
   static int GetWindowsState(Part part, State state, const ExtraParams& extra);
 
+  // Get the color used for showing the last selection before focus was moved

[msw, 2016/11/09 02:08:53]

nit: avoid over-specializing the comment regarding the movement of focus (it's
not necessarily true that the control was ever focused before). eg. "Get the
color used for showing a selection within an unfocused control."

+  // away. Used for text, tree, and table selections.
+  SkColor GetUnfocusedSelectionBackgroundColor() const;
+
   HRESULT GetThemeInt(ThemeName theme,
                       int part_id,
                       int state_id,
                       int prop_id,
                       int *result) const;
 
   HRESULT PaintFrameControl(HDC hdc,
                             const gfx::Rect& rect,
                             UINT type,
                             UINT state,
@@ skipping 72 matching lines @@
 
   // Is |is_using_high_contrast_| valid?
   mutable bool is_using_high_contrast_valid_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeThemeWin);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_WIN_H_