Disable "Reset to Default Theme" button in Google Chrome Options / Personal S...

chrome/browser/views/options/content_page_view.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/views/options/content_page_view.h"
 
 #include <windows.h>
 #include <shlobj.h>
 #include <vsstyle.h>
 #include <vssym32.h>
@@ skipping 186 matching lines @@
   layout->StartRow(0, single_column_view_set_id);
   InitThemesGroup();
   layout->AddView(themes_group_);
   layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
 
   // Init member prefs so we can update the controls if prefs change.
   ask_to_save_passwords_.Init(prefs::kPasswordManagerEnabled,
                               profile()->GetPrefs(), this);
   ask_to_save_form_autofill_.Init(prefs::kFormAutofillEnabled,
                                   profile()->GetPrefs(), this);
+  is_using_default_theme_.Init(prefs::kCurrentThemeID,
+                               profile()->GetPrefs(), this);
 }
 
 void ContentPageView::NotifyPrefChanged(const std::wstring* pref_name) {
   if (!pref_name || *pref_name == prefs::kPasswordManagerEnabled) {
     if (ask_to_save_passwords_.GetValue()) {
       passwords_asktosave_radio_->SetChecked(true);
     } else {
       passwords_neversave_radio_->SetChecked(true);
     }
   }
   if (!pref_name || *pref_name == prefs::kFormAutofillEnabled) {
     if (ask_to_save_form_autofill_.GetValue()) {
       form_autofill_asktosave_radio_->SetChecked(true);
     } else {
       form_autofill_neversave_radio_->SetChecked(true);
     }
   }
+  if (!pref_name || *pref_name == prefs::kCurrentThemeID) {
+    themes_reset_button_->SetEnabled(
+        is_using_default_theme_.GetValue().length() > 0);
+  }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // ContentsPageView, views::View overrides:
 
 void ContentPageView::Layout() {
 #ifdef CHROME_PERSONALIZATION
   if (is_initialized())
     UpdateSyncControls();
 #endif
@@ skipping 241 matching lines @@
   if (status_has_error) {
     sync_status_label_->set_background(CreateErrorBackground());
     sync_action_link_->set_background(CreateErrorBackground());
   } else {
     sync_status_label_->set_background(NULL);
     sync_action_link_->set_background(NULL);
   }
 }
 
 #endif