GN: Make content_shell and webkit_unit_tests work in component build

google_apis/gcm/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("//third_party/protobuf/proto_library.gni")
 
 component("gcm") {
   sources = [
     "base/mcs_message.cc",
     "base/mcs_message.h",
@@ skipping 77 matching lines @@
 }
 
 # A standalone MCS (mobile connection server) client.
 executable("mcs_probe") {
   sources = [
     "tools/mcs_probe.cc",
   ]
 
   deps = [
     ":gcm",
+    ":proto",
     ":test_support",
     "//base",
     "//net",
     "//net:test_support",
   ]
 }
 
 test("gcm_unit_tests") {
   sources = [
     "base/mcs_message_unittest.cc",
     "base/mcs_util_unittest.cc",
     "base/socket_stream_unittest.cc",
     "engine/account_mapping_unittest.cc",
     "engine/checkin_request_unittest.cc",
     "engine/connection_factory_impl_unittest.cc",
     "engine/connection_handler_impl_unittest.cc",
     "engine/gcm_store_impl_unittest.cc",
     "engine/gservices_settings_unittest.cc",
     "engine/heartbeat_manager_unittest.cc",
     "engine/mcs_client_unittest.cc",
     "engine/registration_request_unittest.cc",
     "engine/unregistration_request_unittest.cc",
   ]
 
   deps = [
+    ":proto",
     ":test_support",
     "//base",
     "//base/test:run_all_unittests",
     "//net",
     "//net:test_support",
     "//testing/gtest",
   ]
 }