Prompt user for file access permission before download starts

content/content_browser.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../device/battery/battery.gyp:device_battery',
     '../device/battery/battery.gyp:device_battery_mojo_bindings',
@@ skipping 53 matching lines @@
     'public_browser_sources': [
       'public/browser/access_token_store.h',
       'public/browser/android/browser_media_player_manager_register.cc',
       'public/browser/android/browser_media_player_manager_register.h',
       'public/browser/android/compositor.h',
       'public/browser/android/compositor_client.h',
       'public/browser/android/content_protocol_handler.h',
       'public/browser/android/content_view_core.h',
       'public/browser/android/content_view_layer_renderer.h',
       'public/browser/android/devtools_auth.h',
+      'public/browser/android/download_controller_android.cc',
       'public/browser/android/download_controller_android.h',
       'public/browser/android/external_video_surface_container.h',
       'public/browser/android/synchronous_compositor.h',
       'public/browser/android/synchronous_compositor_client.h',
       'public/browser/appcache_service.h',
       'public/browser/ax_event_notification_details.cc',
       'public/browser/ax_event_notification_details.h',
       'public/browser/background_tracing_config.cc',
       'public/browser/background_tracing_config.h',
       'public/browser/background_tracing_manager.h',
@@ skipping 305 matching lines @@
       'browser/android/in_process/synchronous_input_event_filter.cc',
       'browser/android/in_process/synchronous_input_event_filter.h',
       'browser/android/in_process_surface_texture_manager.cc',
       'browser/android/in_process_surface_texture_manager.h',
       'browser/android/interstitial_page_delegate_android.cc',
       'browser/android/interstitial_page_delegate_android.h',
       'browser/android/load_url_params.cc',
       'browser/android/load_url_params.h',
       'browser/android/media_players_observer.cc',
       'browser/android/media_players_observer.h',
+      'browser/android/mock_download_controller_android.cc',
+      'browser/android/mock_download_controller_android.h',
       'browser/android/overscroll_controller_android.cc',
       'browser/android/overscroll_controller_android.h',
       'browser/android/overscroll_glow.cc',
       'browser/android/overscroll_glow.h',
       'browser/android/overscroll_refresh.cc',
       'browser/android/overscroll_refresh.h',
       'browser/android/popup_touch_handle_drawable.cc',
       'browser/android/popup_touch_handle_drawable.h',
       'browser/android/tracing_controller_android.cc',
       'browser/android/tracing_controller_android.h',
@@ skipping 1698 matching lines @@
       'sources': [
         'browser/vr/vr_device.cc',
         'browser/vr/vr_device.h',
         'browser/vr/vr_device_manager.cc',
         'browser/vr/vr_device_manager.h',
         'browser/vr/vr_device_provider.h',
       ]
     }],
   ],
 }