GTK Themes: A gtkrc file can now override our choice of frame color by

base/gfx/gtk_util.h

 // Copyright (c) 2009 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 BASE_GFX_GTK_UTIL_H_
 #define BASE_GFX_GTK_UTIL_H_
 
 #include <stdint.h>
 #include <vector>
 
 #include <glib-object.h>
 
 #include "base/scoped_ptr.h"
 
 typedef struct _GdkColor GdkColor;
 typedef struct _GdkPixbuf GdkPixbuf;
 typedef struct _GdkRegion GdkRegion;
 
 class SkBitmap;
 
+const int kSkiaToGDKMultiplier = 257;
+
 // Define a macro for creating GdkColors from RGB values.  This is a macro to
 // allow static construction of literals, etc.  Use this like:
 //   GdkColor white = GDK_COLOR_RGB(0xff, 0xff, 0xff);
-#define GDK_COLOR_RGB(r, g, b) {0, r * 257, g * 257, b * 257}
+#define GDK_COLOR_RGB(r, g, b) {0, r * kSkiaToGDKMultiplier, \
+        g * kSkiaToGDKMultiplier, b * kSkiaToGDKMultiplier}
 
 namespace gfx {
 
 class Rect;
 
 extern const GdkColor kGdkWhite;
 extern const GdkColor kGdkBlack;
 extern const GdkColor kGdkGreen;
 
 // Convert and copy a SkBitmap to a GdkPixbuf. NOTE: this uses BGRAToRGBA, so
@@ skipping 20 matching lines @@
 
 // It's not legal C++ to have a templatized typedefs, so we wrap it in a
 // struct.  When using this, you need to include ::Type.  E.g.,
 // ScopedGObject<GdkPixbufLoader>::Type loader(gdk_pixbuf_loader_new());
 template<class T>
 struct ScopedGObject {
   typedef scoped_ptr_malloc<T, GObjectUnrefer<T> > Type;
 };
 
 #endif  // BASE_GFX_GTK_UTIL_H_