FBTF: Fix more ctor/dtors found by clang plugin.

chrome/browser/extensions/default_apps.cc

 // Copyright (c) 2010 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/default_apps.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 
 const int DefaultApps::kAppsPromoCounterMax = 10;
 
 // static
 void DefaultApps::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterBooleanPref(prefs::kDefaultAppsInstalled, false);
   prefs->RegisterIntegerPref(prefs::kAppsPromoCounter, 0);
 }
 
 DefaultApps::DefaultApps(PrefService* prefs)
     : prefs_(prefs) {
   // gmail, calendar, docs
   ids_.insert("pjkljhegncpnkpknbcohdijeoejaedia");
   ids_.insert("ejjicmeblgpmajnghnpcppodonldlgfn");
   ids_.insert("apdfllckaahabafndbhieahigkjlhalf");
 }
 
+DefaultApps::~DefaultApps() {}
+
 const ExtensionIdSet* DefaultApps::GetAppsToInstall() const {
   if (GetDefaultAppsInstalled())
     return NULL;
   else
     return &ids_;
 }
 
 void DefaultApps::DidInstallApp(const ExtensionIdSet& installed_ids) {
   // If all the default apps have been installed, stop trying to install them.
   // Note that we use std::includes here instead of == because apps might have
@@ skipping 58 matching lines @@
 }
 
 bool DefaultApps::GetDefaultAppsInstalled() const {
   return prefs_->GetBoolean(prefs::kDefaultAppsInstalled);
 }
 
 void DefaultApps::SetDefaultAppsInstalled(bool val) {
   prefs_->SetBoolean(prefs::kDefaultAppsInstalled, val);
   prefs_->ScheduleSavePersistentPrefs();
 }