Improve some naming

chrome/browser/ui/extensions/extension_install_ui_default.cc

 // Copyright (c) 2012 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/extensions/extension_install_ui_default.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 186 matching lines @@
   // No browser window is open yet. Create a free-standing dialog associated
   // with |profile|.
   return new ExtensionInstallPrompt(profile, NULL, NULL);
 }
 
 
 // ExtensionInstallUIDefault --------------------------------------------------
 
 ExtensionInstallUIDefault::ExtensionInstallUIDefault(Profile* profile)
     : ExtensionInstallUI(profile),
-      previous_using_native_theme_(false),
+      previous_using_system_theme_(false),
       use_app_installed_bubble_(false) {
   // |profile| can be NULL during tests.
   if (profile) {
     // Remember the current theme in case the user presses undo.
     const Extension* previous_theme =
         ThemeServiceFactory::GetThemeForProfile(profile);
     if (previous_theme)
       previous_theme_id_ = previous_theme->id();
-    previous_using_native_theme_ =
-        ThemeServiceFactory::GetForProfile(profile)->UsingNativeTheme();
+    previous_using_system_theme_ =
+        ThemeServiceFactory::GetForProfile(profile)->UsingSystemTheme();
   }
 }
 
 ExtensionInstallUIDefault::~ExtensionInstallUIDefault() {}
 
 void ExtensionInstallUIDefault::OnInstallSuccess(const Extension* extension,
                                                  SkBitmap* icon) {
   if (skip_post_install_ui())
     return;
 
   if (!profile()) {
     // TODO(zelidrag): Figure out what exact conditions cause crash
     // http://crbug.com/159437 and write browser test to cover it.
     NOTREACHED();
     return;
   }
 
   if (extension->is_theme()) {
     ThemeInstalledInfoBarDelegate::Create(
-        extension, profile(), previous_theme_id_, previous_using_native_theme_);
+        extension, profile(), previous_theme_id_, previous_using_system_theme_);
     return;
   }
 
   // Extensions aren't enabled by default in incognito so we confirm
   // the install in a normal window.
   Profile* current_profile = profile()->GetOriginalProfile();
   if (extension->is_app()) {
     bool use_bubble = false;
 
 #if defined(TOOLKIT_VIEWS)  || defined(OS_MACOSX)
@@ skipping 41 matching lines @@
       browser->tab_strip_model()->GetActiveWebContents();
   if (!web_contents)
     return;
   ErrorInfoBarDelegate::Create(InfoBarService::FromWebContents(web_contents),
                                error);
 }
 
 void ExtensionInstallUIDefault::SetUseAppInstalledBubble(bool use_bubble) {
   use_app_installed_bubble_ = use_bubble;
 }