Add a mock class for DiskMountManagerObserver. disk_mount_manager_observer_unittests will be rewrit…

chromeos/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/ui.gni")
 import("//testing/test.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 assert(is_chromeos, "Non-ChromeOS builds must not depend on //chromeos")
 
@@ skipping 83 matching lines @@
     "dbus/mock_shill_manager_client.cc",
     "dbus/mock_shill_manager_client.h",
     "dbus/mock_shill_profile_client.cc",
     "dbus/mock_shill_profile_client.h",
     "dbus/mock_shill_service_client.cc",
     "dbus/mock_shill_service_client.h",
     "dbus/services/service_provider_test_helper.cc",
     "dbus/services/service_provider_test_helper.h",
     "disks/mock_disk_mount_manager.cc",
     "disks/mock_disk_mount_manager.h",
+    "disks/mock_disk_mount_manager_observer.cc",
+    "disks/mock_disk_mount_manager_observer.h",
     "login/auth/fake_extended_authenticator.cc",
     "login/auth/fake_extended_authenticator.h",
     "login/auth/mock_auth_attempt_state_resolver.cc",
     "login/auth/mock_auth_attempt_state_resolver.h",
     "login/auth/mock_auth_status_consumer.cc",
     "login/auth/mock_auth_status_consumer.h",
     "login/auth/mock_url_fetchers.cc",
     "login/auth/mock_url_fetchers.h",
     "network/fake_network_device_handler.cc",
     "network/fake_network_device_handler.h",
@@ skipping 89 matching lines @@
   proto_out_dir = "chromeos/dbus/cryptohome"
 }
 
 proto_library("cryptohome_signkey_proto") {
   sources = [
     "//third_party/cros_system_api/dbus/cryptohome/signed_secret.proto",
   ]
 
   proto_out_dir = "chromeos/cryptohome"
 }