LibGtkUi: Partition NativeThemeGtk into NativeThemeGtk2 and NativeThemeGtk3

chrome/browser/ui/libgtkui/gtk_util.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 CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_
 #define CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_
 
 #include <gtk/gtk.h>
 #include <string>
 
 #include "ui/native_theme/native_theme.h"
 
 namespace aura {
 class Window;
 }
 
 namespace base {
 class CommandLine;
 class Environment;
 }
 
 namespace ui {
 class Accelerator;
 }
 
 namespace libgtkui {
 
+extern const SkColor kInvalidColorIdColor;
+extern const SkColor kURLTextColor;
+
+// Generates the normal URL color, a green color used in unhighlighted URL
+// text. It is a mix of |kURLTextColor| and the current text color.  Unlike the
+// selected text color, it is more important to match the qualities of the
+// foreground typeface color instead of taking the background into account.
+SkColor NormalURLColor(SkColor foreground);
+
+// Generates the selected URL color, a green color used on URL text in the
+// currently highlighted entry in the autocomplete popup. It's a mix of
+// |kURLTextColor|, the current text color, and the background color (the
+// select highlight). It is more important to contrast with the background
+// saturation than to look exactly like the foreground color.
+SkColor SelectedURLColor(SkColor foreground, SkColor background);
+
 void GtkInitFromCommandLine(const base::CommandLine& command_line);
 
 // Returns the name of the ".desktop" file associated with our running process.
 std::string GetDesktopName(base::Environment* env);
 
 guint GetGdkKeyCodeForAccelerator(const ui::Accelerator& accelerator);
 
 GdkModifierType GetGdkModifierForAccelerator(
     const ui::Accelerator& accelerator);
 
 // Translates event flags into plaform independent event flags.
 int EventFlagsFromGdkState(guint state);
 
 // Style a GTK button as a BlueButton
 void TurnButtonBlue(GtkWidget* button);
 
 // Sets |dialog| as transient for |parent|, which will keep it on top and center
 // it above |parent|. Do nothing if |parent| is NULL.
 void SetGtkTransientForAura(GtkWidget* dialog, aura::Window* parent);
 
 // Gets the transient parent aura window for |dialog|.
 aura::Window* GetAuraTransientParent(GtkWidget* dialog);
 
 // Clears the transient parent for |dialog|.
 void ClearAuraTransientParent(GtkWidget* dialog);
 
 }  // namespace libgtkui
 
 #endif  // CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_