Defaulting all downloads to go through Chrome network stack

chrome/browser/download/download_ui_controller.cc

 // Copyright 2013 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_ui_controller.h"
 
 #include <utility>
 
 #include "base/callback.h"
 #include "base/stl_util.h"
@@ skipping 38 matching lines @@
 };
 
 void AndroidUIControllerDelegate::OnNewDownloadReady(
     content::DownloadItem* item) {
   // The Android DownloadController is only interested in IN_PROGRESS downloads.
   // Ones which are INTERRUPTED etc. can't be handed over to the Android
   // DownloadManager.
   if (item->GetState() != content::DownloadItem::IN_PROGRESS)
     return;
 
-  // GET downloads without authentication are delegated to the Android
-  // DownloadManager. Chrome is responsible for the rest.  See
-  // InterceptDownloadResourceThrottle::ProcessDownloadRequest().
   DownloadControllerBase::Get()->OnDownloadStarted(item);
 }
 
 #else  // OS_ANDROID
 
 class DownloadShelfUIControllerDelegate
     : public DownloadUIController::Delegate {
  public:
   // |profile| is required to outlive DownloadShelfUIControllerDelegate.
   explicit DownloadShelfUIControllerDelegate(Profile* profile)
@@ skipping 106 matching lines @@
     }
   }
 #endif
 
   if (item->GetState() == content::DownloadItem::CANCELLED)
     return;
 
   DownloadItemModel(item).SetWasUINotified(true);
   delegate_->OnNewDownloadReady(item);
 }