use the right NativeTheme on bubbles + dialogs on Aura Linux

chrome/browser/ui/libgtk2ui/gtk2_ui.h

 // Copyright (c) 2013 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_LIBGTK2UI_GTK2_UI_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 27 matching lines @@
 class Gtk2SignalRegistrar;
 class GConfListener;
 
 // Interface to GTK2 desktop features.
 //
 class Gtk2UI : public views::LinuxUI {
  public:
   Gtk2UI();
   virtual ~Gtk2UI();
 
+  typedef base::Callback<ui::NativeTheme*(aura::Window* window)>
+      NativeThemeGetter;
+
   // Setters used by GConfListener:
   void SetWindowButtonOrdering(
     const std::vector<views::FrameButton>& leading_buttons,
     const std::vector<views::FrameButton>& trailing_buttons);
   void SetNonClientMiddleClickAction(NonClientMiddleClickAction action);
 
   // Draws the GTK button border for state |gtk_state| onto a bitmap.
   SkBitmap DrawGtkButtonBorder(int gtk_state,
                                bool focused,
                                int width,
@@ skipping 25 matching lines @@
   virtual bool HasCustomImage(int id) const OVERRIDE;
   virtual SkColor GetFocusRingColor() const OVERRIDE;
   virtual SkColor GetThumbActiveColor() const OVERRIDE;
   virtual SkColor GetThumbInactiveColor() const OVERRIDE;
   virtual SkColor GetTrackColor() const OVERRIDE;
   virtual SkColor GetActiveSelectionBgColor() const OVERRIDE;
   virtual SkColor GetActiveSelectionFgColor() const OVERRIDE;
   virtual SkColor GetInactiveSelectionBgColor() const OVERRIDE;
   virtual SkColor GetInactiveSelectionFgColor() const OVERRIDE;
   virtual double GetCursorBlinkInterval() const OVERRIDE;
-  virtual ui::NativeTheme* GetNativeTheme() const OVERRIDE;
+  virtual ui::NativeTheme* GetNativeTheme(aura::Window* window) const OVERRIDE;
+  virtual void SetNativeThemeOverride(const NativeThemeGetter& callback)
+      OVERRIDE;
   virtual bool GetDefaultUsesSystemTheme() const OVERRIDE;
   virtual void SetDownloadCount(int count) const OVERRIDE;
   virtual void SetProgressFraction(float percentage) const OVERRIDE;
   virtual bool IsStatusIconSupported() const OVERRIDE;
   virtual scoped_ptr<views::StatusIconLinux> CreateLinuxStatusIcon(
       const gfx::ImageSkia& image,
       const base::string16& tool_tip) const OVERRIDE;
   virtual gfx::Image GetIconForContentType(
       const std::string& content_type, int size) const OVERRIDE;
   virtual scoped_ptr<views::Border> CreateNativeBorder(
@@ skipping 145 matching lines @@
   // Observers to notify when the theme state changes.
   ObserverList<views::NativeThemeChangeObserver> theme_change_observers_;
 
   // Whether we should lower the window on a middle click to the non client
   // area.
   NonClientMiddleClickAction middle_click_action_;
 
   // Image cache of lazily created images.
   mutable ImageCache gtk_images_;
 
+  // Used to override the native theme for a window. If no override is provided
+  // or the callback returns NULL, Gtk2UI will default to a NativeThemeGtk2
+  // instance.
+  NativeThemeGetter native_theme_overrider_;
+
   DISALLOW_COPY_AND_ASSIGN(Gtk2UI);
 };
 
 }  // namespace libgtk2ui
 
 // Access point to the GTK2 desktop system. This should be the only symbol that
 // is exported in the library; everything else should be used through the
 // interface, because eventually this .so will be loaded through dlopen at
 // runtime so our main binary can conditionally load GTK2 or GTK3 or EFL or
 // QT or whatever.
 LIBGTK2UI_EXPORT views::LinuxUI* BuildGtk2UI();
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_