MD Settings: implement support for extension-controlled startup URLs

chrome/browser/extensions/api/settings_private/prefs_util.cc

 // Copyright 2015 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/extensions/api/settings_private/prefs_util.h"
 
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/settings_api_helpers.h"
@@ skipping 678 matching lines @@
   return false;
 #endif
 }
 
 const Extension* PrefsUtil::GetExtensionControllingPref(
     const settings_private::PrefObject& pref_object) {
   // Look for specific prefs that might be extension controlled. This generally
   // corresponds with some indiciator that should be shown in the settings UI.
   if (pref_object.key == ::prefs::kHomePage)
     return GetExtensionOverridingHomepage(profile_);
+
+  if (pref_object.key == ::prefs::kRestoreOnStartup) {
+    int restore_on_startup;
+    CHECK(pref_object.value->GetAsInteger(&restore_on_startup));
+
+    if (restore_on_startup == SessionStartupPref::kPrefValueURLs)
+      return GetExtensionOverridingStartupPages(profile_);
+  }
+
   if (pref_object.key == ::prefs::kURLsToRestoreOnStartup)
     return GetExtensionOverridingStartupPages(profile_);
+
   if (pref_object.key == ::prefs::kDefaultSearchProviderEnabled)
     return GetExtensionOverridingSearchEngine(profile_);
+
   if (pref_object.key == proxy_config::prefs::kProxy)
     return GetExtensionOverridingProxy(profile_);
+
   return nullptr;
 }
 
 }  // namespace extensions