Fix warning prompting on closing a window that will cancel downloads.

chrome/browser/download/download_service.cc

 // Copyright (c) 2011 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/download/download_service.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
+#include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "content/browser/download/download_manager.h"
 
 DownloadService::DownloadService(Profile* profile)
     : download_manager_created_(false),
       profile_(profile) {}
 
 DownloadService::~DownloadService() {}
 
 DownloadManager* DownloadService::GetDownloadManager() {
   if (!download_manager_created_) {
     // In case the delegate has already been set by
     // SetDownloadManagerDelegateForTesting.
     if (!manager_delegate_.get())
       manager_delegate_ = new ChromeDownloadManagerDelegate(profile_);
     manager_ = new DownloadManager(
         manager_delegate_.get(), g_browser_process->download_status_updater());
     manager_->Init(profile_);
     manager_delegate_->SetDownloadManager(manager_);
     download_manager_created_ = true;
   }
   return manager_.get();
 }
 
 bool DownloadService::HasCreatedDownloadManager() {
   return download_manager_created_;
 }
 
+int DownloadService::DownloadCount() const {
+  return download_manager_created_ ? manager_->in_progress_count() : 0;
+}
+
+// static
+int DownloadService::DownloadCountAllProfiles() {
+  std::vector<Profile*> profiles(
+      g_browser_process->profile_manager()->GetLoadedProfiles());
+
+  int count = 0;
+  for (std::vector<Profile*>::iterator it = profiles.begin();
+       it < profiles.end(); ++it) {
+    count += DownloadServiceFactory::GetForProfile(*it)->DownloadCount();
+    if ((*it)->HasOffTheRecordProfile())
+      count += DownloadServiceFactory::GetForProfile(
+          (*it)->GetOffTheRecordProfile())->DownloadCount();
+  }
+
+  return count;
+}
+
 void DownloadService::SetDownloadManagerDelegateForTesting(
     ChromeDownloadManagerDelegate* new_delegate) {
   // Guarantee everything is properly initialized.
   GetDownloadManager();
 
   manager_->SetDownloadManagerDelegate(new_delegate);
   new_delegate->SetDownloadManager(manager_);
   manager_delegate_ = new_delegate;
 }
 
 void DownloadService::Shutdown() {
   if (manager_.get()) {
     manager_->Shutdown();
 
     // The manager reference can be released any time after shutdown;
     // it will be destroyed when the last reference is released on the
     // FILE thread.
     // Resetting here will guarantee that any attempts to get the
     // DownloadManager after shutdown will return null.
     //
     // TODO(rdsmith): Figure out how to guarantee when the last reference
     // will be released and make DownloadManager not RefCountedThreadSafe<>.
     manager_.release();
   }
   if (manager_delegate_.get())
     manager_delegate_.release();
 }