[ios] Adds OmahaServiceProvider.

ios/public/provider/chrome/browser/BUILD.gn

 # Copyright 2015 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/buildflag_header.gni")
 import("//ios/public/provider/chrome/browser/build_config.gni")
 
 source_set("browser") {
   sources = [
     "chrome_browser_provider.h",
     "chrome_browser_provider.mm",
     "distribution/app_distribution_provider.h",
     "distribution/app_distribution_provider.mm",
     "geolocation_updater_provider.h",
     "geolocation_updater_provider.mm",
+    "omaha/omaha_service_provider.h",
+    "omaha/omaha_service_provider.mm",
     "signin/chrome_identity.h",
     "signin/chrome_identity.mm",
     "signin/chrome_identity_browser_opener.h",
     "signin/chrome_identity_interaction_manager.h",
     "signin/chrome_identity_interaction_manager.mm",
     "signin/chrome_identity_service.h",
     "signin/chrome_identity_service.mm",
     "signin/signin_error_provider.h",
     "signin/signin_error_provider.mm",
     "signin/signin_resources_provider.h",
@@ skipping 47 matching lines @@
   header = "provider_flags.h"
   flags = [ "USE_IOS_INTERNAL_PROVIDER=$use_ios_internal_provider" ]
 }
 
 source_set("test_support") {
   testonly = true
 
   sources = [
     "distribution/test_app_distribution_provider.h",
     "distribution/test_app_distribution_provider.mm",
+    "omaha/test_omaha_service_provider.h",
+    "omaha/test_omaha_service_provider.mm",
     "signin/fake_chrome_identity.h",
     "signin/fake_chrome_identity.mm",
     "signin/fake_chrome_identity_interaction_manager.h",
     "signin/fake_chrome_identity_interaction_manager.mm",
     "signin/fake_chrome_identity_service.h",
     "signin/fake_chrome_identity_service.mm",
     "test_chrome_browser_provider.h",
     "test_chrome_browser_provider.mm",
     "test_chrome_provider_initializer.h",
     "test_chrome_provider_initializer.mm",
     "test_updatable_resource_provider.h",
     "test_updatable_resource_provider.mm",
     "voice/test_voice_search_provider.h",
     "voice/test_voice_search_provider.mm",
   ]
 
   deps = [
     ":browser",
     "//base",
     "//components/signin/ios/browser:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }