Fix a typo in deletion loop.

athena/activity/activity_manager_impl.cc

 // Copyright 2014 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 "athena/activity/public/activity_manager.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_view_manager.h"
 #include "base/logging.h"
 
 namespace athena {
 
 namespace {
 
 ActivityManager* instance = NULL;
 
 class ActivityManagerImpl : public ActivityManager {
  public:
   ActivityManagerImpl() {
     CHECK(!instance);
     instance = this;
   }
   virtual ~ActivityManagerImpl() {
-    while (activities_.empty())
+    while (!activities_.empty())
       delete activities_.front();
 
     CHECK_EQ(this, instance);
     instance = NULL;
   }
 
   // ActivityManager:
   virtual void AddActivity(Activity* activity) OVERRIDE {
     CHECK(activities_.end() == std::find(activities_.begin(),
                                          activities_.end(),
@@ skipping 41 matching lines @@
   return instance;
 }
 
 void ActivityManager::Shutdown() {
   CHECK(instance);
   delete instance;
   ActivityViewManager::Shutdown();
 }
 
 }  // namespace athena