GTK: Use "Set to Classic theme" instead of reset in the options dialog.

chrome/browser/gtk/options/content_page_gtk.cc

 // Copyright (c) 2009 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/gtk/options/content_page_gtk.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/gfx/gtk_util.h"
 #include "chrome/browser/browser_list.h"
@@ skipping 192 matching lines @@
   // GTK theme button.
   GtkWidget* gtk_theme_button = gtk_button_new_with_label(
       l10n_util::GetStringUTF8(IDS_THEMES_GTK_BUTTON).c_str());
   g_signal_connect(G_OBJECT(gtk_theme_button), "clicked",
                    G_CALLBACK(OnGtkThemeButtonClicked), this);
   gtk_box_pack_start(GTK_BOX(hbox), gtk_theme_button, FALSE, FALSE, 0);
 #endif
 
   // Reset theme button.
   GtkWidget* themes_reset_button = gtk_button_new_with_label(
-      l10n_util::GetStringUTF8(IDS_THEMES_RESET_BUTTON).c_str());
+      l10n_util::GetStringUTF8(IDS_THEMES_SET_CLASSIC).c_str());
   g_signal_connect(G_OBJECT(themes_reset_button), "clicked",
                    G_CALLBACK(OnResetDefaultThemeButtonClicked), this);
   gtk_box_pack_start(GTK_BOX(hbox), themes_reset_button, FALSE, FALSE, 0);
 
   // Get themes button.
   GtkWidget* themes_gallery_button = gtk_chrome_link_button_new(
       l10n_util::GetStringUTF8(IDS_THEMES_GALLERY_BUTTON).c_str());
   g_signal_connect(G_OBJECT(themes_gallery_button), "clicked",
                    G_CALLBACK(OnGetThemesButtonClicked), this);
   gtk_box_pack_start(GTK_BOX(hbox), themes_gallery_button, FALSE, FALSE, 0);
@@ skipping 99 matching lines @@
       GTK_TOGGLE_BUTTON(page->form_autofill_asktosave_radio_));
   if (enabled) {
     page->UserMetricsRecordAction(L"Options_FormAutofill_Enable",
                                   page->profile()->GetPrefs());
   } else {
     page->UserMetricsRecordAction(L"Options_FormAutofill_Disable",
                                   page->profile()->GetPrefs());
   }
   page->ask_to_save_form_autofill_.SetValue(enabled);
 }