Add //components/webdata/common to the GN build.

chrome/browser/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/grit_rule.gni")
 
 about_credits_file = "$target_gen_dir/about_credits.html"
@@ skipping 43 matching lines @@
     "//components/navigation_metrics",
     "//components/os_crypt",
     "//components/policy:policy_component",
     "//components/query_parser",
     "//components/rappor",
     "//components/strings",
     "//components/translate/core/browser",
     "//components/translate/core/common",
     "//components/url_fixer",
     "//components/user_prefs",
+    "//components/webdata/common",
     "//content/public/browser",
     "//content/public/common",
     "//courgette:courgette_lib",
     "//crypto",
     "//google_apis",
     "//skia",
     "//sql",
     "//sync",
     "//third_party/cacheinvalidation",
     "//third_party/icu",
@@ skipping 19 matching lines @@
     #"../components/components.gyp:network_time",
     #"../components/components.gyp:omaha_query_params",
     #"../components/components.gyp:password_manager_core_browser",
     #"../components/components.gyp:password_manager_core_common",
     #"../components/components.gyp:precache_core",
     #"../components/components.gyp:search_engines",
     #"../components/components.gyp:search_provider_logos",
     #"../components/components.gyp:signin_core_browser",
     #"../components/components.gyp:startup_metric_utils",
     #"../components/components.gyp:sync_driver",
-    #"../components/components.gyp:webdata_common",
     #"../jingle/jingle.gyp:notifier",
     #"../third_party/libjingle/libjingle.gyp:libjingle",
     #"../ui/message_center/message_center.gyp:message_center",
     #"../ui/shell_dialogs/shell_dialogs.gyp:shell_dialogs",
   ]
 
   forward_dependent_configs_from = [
     "//components/autofill/core/browser",
     "//content/public/browser",
     "//sql",
@@ skipping 537 matching lines @@
 # TODO(GYP) write internal action
 if (false) {  #if (is_chrome_branded) {
   action("chrome_internal_resources_gen") {
     # TODO(GYP)
   }
 } else {
   group("chrome_internal_resources_gen") {
     # Empty placeholder.
   }
 }