Make sure to check for in-progress downloads when quitting. Adds back in code...

chrome/browser/app_controller_mac.mm

 // 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.
 
 #import "chrome/browser/app_controller_mac.h"
 
 #include "app/l10n_util_mac.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/mac_util.h"
@@ skipping 222 matching lines @@
 // called. In a release build, cancelling termination will prevent a crash (but
 // if things go really wrong, the user may have to force-terminate the
 // application).
 - (NSApplicationTerminateReply)applicationShouldTerminate:
     (NSApplication*)sender {
   NOTREACHED();
   return NSTerminateCancel;
 }
 
 - (BOOL)tryToTerminateApplication:(NSApplication*)app {
+  // Check for in-process downloads, and prompt the user if they really want
+  // to quit (and thus cancel downloads). Only check if we're not already
+  // shutting down, else the user might be prompted multiple times if the
+  // download isn't stopped before terminate is called again.
+  if (!browser_shutdown::IsTryingToQuit() &&
+      ![self shouldQuitWithInProgressDownloads])
+    return NO;
+
   // Set the state to "trying to quit", so that closing all browser windows will
   // lead to termination.
   browser_shutdown::SetTryingToQuit(true);
 
   // TODO(viettrungluu): Remove Apple Event handlers here? (It's safe to leave
   // them in, but I'm not sure about UX; we'd also want to disable other things
   // though.) http://crbug.com/40861
 
   if (!BrowserList::size())
     return YES;
@@ skipping 756 matching lines @@
   [appController showPreferencesWindow:nil page:page profile:profile];
 }
 
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac