gtk: Rename GtkThemeService to ThemeServiceGtk.

chrome/browser/ui/gtk/back_forward_button_gtk.cc

Index: chrome/browser/ui/gtk/back_forward_button_gtk.cc
diff --git a/chrome/browser/ui/gtk/back_forward_button_gtk.cc b/chrome/browser/ui/gtk/back_forward_button_gtk.cc
index 35d3fc54e4df213e6d4823b3cfff5a2fba5acc09..c4e7611561361600712cc015ee75641d2a175e06 100644
--- a/chrome/browser/ui/gtk/back_forward_button_gtk.cc
+++ b/chrome/browser/ui/gtk/back_forward_button_gtk.cc
@@ -6,14 +6,14 @@
 
 #include <gtk/gtk.h>
 
-#include "base/message_loop.h"
 #include "base/bind.h"
+#include "base/message_loop.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
+#include "chrome/browser/ui/gtk/theme_service_gtk.h"
 #include "chrome/browser/ui/toolbar/back_forward_menu_model.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
@@ -45,7 +45,7 @@ BackForwardButtonGtk::BackForwardButtonGtk(Browser* browser, bool is_forward)
     stock = GTK_STOCK_GO_BACK;
   }
   button_.reset(new CustomDrawButton(
-      GtkThemeService::GetFrom(browser_->profile()),
+      ThemeServiceGtk::GetFrom(browser_->profile()),
       normal, pushed, hover, disabled, stock, GTK_ICON_SIZE_SMALL_TOOLBAR));
   gtk_widget_set_tooltip_text(widget(),
                               l10n_util::GetStringUTF8(tooltip).c_str());