Chromium side of trackbar drawing. This is needed to support <input type="ra...

base/gfx/native_theme.h

 // Copyright (c) 2006-2008 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.
 //
 // A wrapper class for working with custom XP/Vista themes provided in
 // uxtheme.dll.  This is a singleton class that can be grabbed using
 // NativeTheme::instance().
 // For more information on visual style parts and states, see:
 // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/userex/topics/partsandstates.asp
 
@@ skipping 23 matching lines @@
  public:
   enum ThemeName {
     BUTTON,
     LIST,
     MENU,
     MENULIST,
     SCROLLBAR,
     STATUS,
     TAB,
     TEXTFIELD,
+    TRACKBAR,
     WINDOW,
     LAST
   };
 
   // This enumeration is used within PaintMenuArrow in order to indicate the
   // direction the menu arrow should point to.
   enum MenuArrowDirection {
     LEFT_POINTING_ARROW,
     RIGHT_POINTING_ARROW
   };
@@ skipping 138 matching lines @@
 
   HRESULT PaintTextField(HDC hdc,
                          int part_id,
                          int state_id,
                          int classic_state,
                          RECT* rect,
                          COLORREF color,
                          bool fill_content_area,
                          bool draw_edges) const;
 
+  HRESULT PaintTrackbar(HDC hdc,
+                        int part_id,
+                        int state_id,
+                        int classic_state,
+                        RECT* rect,
+                        skia::PlatformCanvasWin* canvas) const;
+
   bool IsThemingActive() const;
 
   HRESULT GetThemePartSize(ThemeName themeName,
                            HDC hdc,
                            int part_id,
                            int state_id,
                            RECT* rect,
                            int ts,
                            SIZE* size) const;
 
@@ skipping 67 matching lines @@
 
   // A cache of open theme handles.
   mutable HANDLE theme_handles_[LAST];
 
   DISALLOW_EVIL_CONSTRUCTORS(NativeTheme);
 };
 
 }  // namespace gfx
 
 #endif  // BASE_GFX_NATIVE_THEME_H__