Initial gtk3 support

chrome/browser/ui/libgtk2ui/native_theme_gtk2.cc

 // 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.
 
 #include "chrome/browser/ui/libgtk2ui/native_theme_gtk2.h"
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/ui/libgtk2ui/chrome_gtk_menu_subclasses.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_ui.h"
@@ skipping 477 matching lines @@
       fake_menu_.Own(gtk_custom_menu_new());
 
     fake_menu_item_ = gtk_custom_menu_item_new();
     gtk_menu_shell_append(GTK_MENU_SHELL(fake_menu_.get()), fake_menu_item_);
   }
 
   return gtk_rc_get_style(fake_menu_item_);
 }
 
 void NativeThemeGtk2::PaintComboboxArrow(SkCanvas* canvas,
-                                         GtkStateType state,
+                                         GtkStateFlags state,
                                          const gfx::Rect& rect) const {
-  GdkPixmap* pm = gdk_pixmap_new(gtk_widget_get_window(GetRealizedWindow()),
-                                 rect.width(),
-                                 rect.height(),
-                                 -1);
-  // Paint the background.
-  gtk_paint_flat_box(GetWindowStyle(),
-                     pm,
-                     state,
-                     GTK_SHADOW_NONE,
-                     NULL,
-                     GetRealizedWindow(),
-                     NULL, 0, 0, rect.width(), rect.height());
-  gtk_paint_arrow(GetWindowStyle(),
-                  pm,
-                  state,
-                  GTK_SHADOW_NONE,
-                  NULL,
-                  GetRealizedWindow(),
-                  NULL,
-                  GTK_ARROW_DOWN,
-                  true,
-                  0, 0, rect.width(), rect.height());
-  GdkPixbuf* pb = gdk_pixbuf_get_from_drawable(NULL,
-                                               pm,
-                                               gdk_drawable_get_colormap(pm),
-                                               0, 0,
-                                               0, 0,
-                                               rect.width(), rect.height());
-  SkBitmap arrow = GdkPixbufToImageSkia(pb);
+  SkBitmap arrow;
+  arrow.allocN32Pixels(rect.width(), rect.height());
+  arrow.eraseColor(0);
+
   canvas->drawBitmap(arrow, rect.x(), rect.y());
-
-  g_object_unref(pb);
-  g_object_unref(pm);
 }
 
 }  // namespace libgtk2ui