Rename omaha_client and similar tokens to update_client in all contexts.

components/component_updater/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.
 
 source_set("component_updater") {
   sources = [
     "background_downloader_win.cc",
     "background_downloader_win.h",
     "component_patcher.cc",
     "component_patcher.h",
@@ skipping 25 matching lines @@
     "update_checker.h",
     "update_response.cc",
     "update_response.h",
     "url_fetcher_downloader.cc",
     "url_fetcher_downloader.h",
   ]
 
   deps = [
     "//base",
     "//components/crx_file",
-    "//components/omaha_client",
+    "//components/update_client",
     "//courgette:courgette_lib",
     "//crypto",
     "//third_party/libxml",
     "//third_party/zlib:zip",
     "//net",
     "//ui/base",
     "//url",
   ]
 }
 
@@ skipping 33 matching lines @@
     ":component_updater",
     ":test_support",
     "//base",
     "//courgette:courgette_lib",
     "//net:test_support",
     "//testing/gtest",
     "//testing/gmock",
     "//third_party/libxml",
   ]
 }