Remove MTP support on Linux.

chrome/browser/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 2059 matching lines @@
         "safe_browsing/services_delegate_stub.h",
       ]
       deps += [ "//components/safe_browsing_db:safe_browsing_db_mobile" ]
     }
   }
 
   if (enable_hotwording) {
     defines += [ "ENABLE_HOTWORDING" ]
   }
 
-  if (is_linux && use_dbus) {
+  if (is_chromeos && use_dbus) {
     deps += [ "//device/media_transfer_protocol" ]
+    sources += [

[tommycli, 2016/09/20 17:37:46]

should we also rename this directory "chromeos"? ... and maybe remove the _linux
from that file?

[Lei Zhang, 2016/09/28 07:23:25]

Done.

+      "media_galleries/linux/mtp_device_delegate_impl_linux.cc",
+      "media_galleries/linux/mtp_device_delegate_impl_linux.h",
+      "media_galleries/linux/mtp_device_object_enumerator.cc",
+      "media_galleries/linux/mtp_device_object_enumerator.h",
+      "media_galleries/linux/mtp_device_task_helper.cc",
+      "media_galleries/linux/mtp_device_task_helper.h",
+      "media_galleries/linux/mtp_device_task_helper_map_service.cc",
+      "media_galleries/linux/mtp_device_task_helper_map_service.h",
+      "media_galleries/linux/mtp_read_file_worker.cc",
+      "media_galleries/linux/mtp_read_file_worker.h",
+    ]
+  }
+  if (is_win || is_mac || (is_chromeos && use_dbus)) {
+    sources += [
+      "media_galleries/fileapi/device_media_async_file_util.cc",
+      "media_galleries/fileapi/device_media_async_file_util.h",
+      "media_galleries/fileapi/mtp_device_async_delegate.cc",
+      "media_galleries/fileapi/mtp_device_async_delegate.h",
+      "media_galleries/fileapi/mtp_device_map_service.cc",
+      "media_galleries/fileapi/mtp_device_map_service.h",
+      "media_galleries/fileapi/mtp_file_stream_reader.cc",
+      "media_galleries/fileapi/mtp_file_stream_reader.h",
+    ]
   }
 
   if (use_udev) {
     deps += [ "//device/udev_linux" ]
   }
 
   if (is_linux && !is_chromeos) {
     deps += [ "//third_party/speech-dispatcher" ]
   }
 
@@ skipping 553 matching lines @@
       "lifetime/keep_alive_registry.h",
       "lifetime/keep_alive_state_observer.h",
       "lifetime/keep_alive_types.cc",
       "lifetime/keep_alive_types.h",
       "lifetime/scoped_keep_alive.cc",
       "lifetime/scoped_keep_alive.h",
       "media/webrtc/tab_desktop_media_list.cc",
       "media/webrtc/tab_desktop_media_list.h",
       "media_galleries/fileapi/av_scanning_file_validator.cc",
       "media_galleries/fileapi/av_scanning_file_validator.h",
-      "media_galleries/fileapi/device_media_async_file_util.cc",
-      "media_galleries/fileapi/device_media_async_file_util.h",
       "media_galleries/fileapi/iapps_finder.h",
       "media_galleries/fileapi/iapps_finder_impl.cc",
       "media_galleries/fileapi/iapps_finder_impl.h",
       "media_galleries/fileapi/iapps_finder_impl_mac.mm",
       "media_galleries/fileapi/iapps_finder_impl_win.cc",
       "media_galleries/fileapi/media_file_system_backend.cc",
       "media_galleries/fileapi/media_file_system_backend.h",
       "media_galleries/fileapi/media_file_validator_factory.cc",
       "media_galleries/fileapi/media_file_validator_factory.h",
       "media_galleries/fileapi/media_path_filter.cc",
       "media_galleries/fileapi/media_path_filter.h",
-      "media_galleries/fileapi/mtp_device_async_delegate.cc",
-      "media_galleries/fileapi/mtp_device_async_delegate.h",
-      "media_galleries/fileapi/mtp_device_map_service.cc",
-      "media_galleries/fileapi/mtp_device_map_service.h",
-      "media_galleries/fileapi/mtp_file_stream_reader.cc",
-      "media_galleries/fileapi/mtp_file_stream_reader.h",
       "media_galleries/fileapi/native_media_file_util.cc",
       "media_galleries/fileapi/native_media_file_util.h",
       "media_galleries/fileapi/picasa_finder.cc",
       "media_galleries/fileapi/picasa_finder.h",
       "media_galleries/fileapi/picasa_finder_mac.mm",
       "media_galleries/fileapi/readahead_file_stream_reader.cc",
       "media_galleries/fileapi/readahead_file_stream_reader.h",
       "media_galleries/fileapi/safe_audio_video_checker.cc",
       "media_galleries/fileapi/safe_audio_video_checker.h",
       "media_galleries/fileapi/safe_media_metadata_parser.cc",
       "media_galleries/fileapi/safe_media_metadata_parser.h",
       "media_galleries/fileapi/supported_audio_video_checker.cc",
       "media_galleries/fileapi/supported_audio_video_checker.h",
       "media_galleries/fileapi/supported_image_type_validator.cc",
       "media_galleries/fileapi/supported_image_type_validator.h",
       "media_galleries/gallery_watch_manager.cc",
       "media_galleries/gallery_watch_manager.h",
       "media_galleries/gallery_watch_manager_observer.h",
       "media_galleries/imported_media_gallery_registry.cc",
       "media_galleries/imported_media_gallery_registry.h",
-      "media_galleries/linux/mtp_device_delegate_impl_linux.cc",
-      "media_galleries/linux/mtp_device_delegate_impl_linux.h",
-      "media_galleries/linux/mtp_device_object_enumerator.cc",
-      "media_galleries/linux/mtp_device_object_enumerator.h",
-      "media_galleries/linux/mtp_device_task_helper.cc",
-      "media_galleries/linux/mtp_device_task_helper.h",
-      "media_galleries/linux/mtp_device_task_helper_map_service.cc",
-      "media_galleries/linux/mtp_device_task_helper_map_service.h",
-      "media_galleries/linux/mtp_read_file_worker.cc",
-      "media_galleries/linux/mtp_read_file_worker.h",
       "media_galleries/linux/snapshot_file_details.cc",
       "media_galleries/linux/snapshot_file_details.h",
       "media_galleries/mac/mtp_device_delegate_impl_mac.h",
       "media_galleries/mac/mtp_device_delegate_impl_mac.mm",
       "media_galleries/media_file_system_registry.cc",
       "media_galleries/media_file_system_registry.h",
       "media_galleries/media_galleries_dialog_controller.cc",
       "media_galleries/media_galleries_dialog_controller.h",
       "media_galleries/media_galleries_histograms.cc",
       "media_galleries/media_galleries_histograms.h",
@@ skipping 1537 matching lines @@
   # linking all of the test support.
   static_library("pepper_cdm_test_constants") {
     testonly = true
     visibility = [ "//chrome/*" ]
     sources = [
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }