Use mojo volume interfaces for mash and classic ash.

chrome/browser/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/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 assert(is_chromeos)
@@ skipping 343 matching lines @@
     "extensions/default_app_order.cc",
     "extensions/default_app_order.h",
     "extensions/device_local_account_external_policy_loader.cc",
     "extensions/device_local_account_external_policy_loader.h",
     "extensions/device_local_account_management_policy_provider.cc",
     "extensions/device_local_account_management_policy_provider.h",
     "extensions/dictionary_event_router.cc",
     "extensions/dictionary_event_router.h",
     "extensions/extension_system_event_observer.cc",
     "extensions/extension_system_event_observer.h",
+    "extensions/extension_volume_observer.cc",
+    "extensions/extension_volume_observer.h",
     "extensions/external_cache.cc",
     "extensions/external_cache.h",
     "extensions/gfx_utils.cc",
     "extensions/gfx_utils.h",
     "extensions/ime_menu_event_router.cc",
     "extensions/ime_menu_event_router.h",
     "extensions/info_private_api.cc",
     "extensions/info_private_api.h",
     "extensions/input_method_event_router.cc",
     "extensions/input_method_event_router.h",
@@ skipping 1237 matching lines @@
     "policy/proto/chrome_device_policy.proto",
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
   ]
 }