Add more GN deps to the build.

device/media_transfer_protocol/BUILD.gn

Index: device/media_transfer_protocol/BUILD.gn
diff --git a/device/media_transfer_protocol/BUILD.gn b/device/media_transfer_protocol/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..0e2ff84b28bed274e3f578bb081b255e2cebb443
--- /dev/null
+++ b/device/media_transfer_protocol/BUILD.gn
@@ -0,0 +1,37 @@
+# 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("//third_party/protobuf/proto_library.gni")
+
+# GYP version: device/media_transfer_protocol/media_transfer_protocol.gyp:mtp_file_entry_proto
+proto_library("mtp_file_entry_proto") {
+  sources = [ "//third_party/cros_system_api/dbus/mtp_file_entry.proto" ]
+  proto_in_dir = "//third_party/cros_system_api/dbus"
+  proto_out_dir = "device/media_transfer_protocol"
+}
+
+# GYP version: device/media_transfer_protocol/media_transfer_protocol.gyp:mtp_storage_info_proto
+proto_library("mtp_storage_info_proto") {
+  sources = [ "//third_party/cros_system_api/dbus/mtp_storage_info.proto" ]
+  proto_in_dir = "//third_party/cros_system_api/dbus"
+  proto_out_dir = "device/media_transfer_protocol"
+}
+
+# GYP version: device/media_transfer_protocol:media_transfer_protocol.gyp:media_transfer_protocol
+static_library("media_transfer_protocol") {
+  sources = [
+    "media_transfer_protocol_daemon_client.cc",
+    "media_transfer_protocol_daemon_client.h",
+    "media_transfer_protocol_manager.cc",
+    "media_transfer_protocol_manager.h",
+  ]
+
+  configs += [ "//build/config/linux:dbus" ]
+
+  deps = [
+    ":mtp_file_entry_proto",
+    ":mtp_storage_info_proto",
+  ]
+  forward_dependent_configs_from = deps
+}