Gtk3: Rename Gtk2UI and Get[FB]GColor

chrome/browser/themes/theme_service.cc

Index: chrome/browser/themes/theme_service.cc
diff --git a/chrome/browser/themes/theme_service.cc b/chrome/browser/themes/theme_service.cc
index 1dad1aa5b3b81bc453776d1164a18fc271ca3726..9f5b82a5d0c094aaec0878b5f62ddfe2adbdfcb7 100644
--- a/chrome/browser/themes/theme_service.cc
+++ b/chrome/browser/themes/theme_service.cc
@@ -434,7 +434,7 @@ SkColor ThemeService::GetDefaultColor(int id, bool incognito) const {
           gfx::kChromeIconGrey,
           GetTint(ThemeProperties::TINT_BUTTONS, incognito));
     case ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON_INACTIVE:
-      // The active color is overridden in Gtk2UI.
+      // The active color is overridden in GtkUi.
       return SkColorSetA(
           GetColor(ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON, incognito),
           0x33);