Get 'gn_all' building on iOS

components/search_engines/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("//tools/json_to_struct/json_to_struct.gni")
 
 static_library("search_engines") {
   sources = [
     "default_search_manager.cc",
@@ skipping 48 matching lines @@
     "//components/google/core/browser",
     "//components/history/core/browser",
     "//components/keyed_service/core",
     "//components/metrics/proto",
 
     # The search_engines target is in an include cycle with
     # components/omnibox/browser. The cycle is whitelisted in the
     # omnibox/browser target, but should ideally be fixed, then this
     # dependency added:
     #"//components/omnibox/browser",
-    "//components/policy:policy_component",
     "//components/pref_registry",
     "//components/rappor",
     "//components/strings",
     "//components/sync_driver",
     "//components/url_formatter",
     "//components/webdata/common",
     "//google_apis",
     "//net",
     "//sql",
     "//sync",
     "//third_party/libxml",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//url",
   ]
 
   if (enable_configuration_policy) {
     sources += [
       "default_search_policy_handler.cc",
       "default_search_policy_handler.h",
     ]
-    deps += [ "//components/policy" ]
+    deps += [
+      "//components/policy",
+      "//components/policy:policy_component",
+    ]
   }
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "default_search_pref_test_util.cc",
     "default_search_pref_test_util.h",
     "testing_search_terms_data.cc",
     "testing_search_terms_data.h",
@@ skipping 11 matching lines @@
   sources = [
     "default_search_manager_unittest.cc",
     "default_search_pref_migration_unittest.cc",
     "desktop_search_win_unittest.cc",
     "keyword_table_unittest.cc",
     "search_host_to_urls_map_unittest.cc",
     "template_url_prepopulate_data_unittest.cc",
     "template_url_service_util_unittest.cc",
     "template_url_unittest.cc",
   ]
-  if (enable_configuration_policy) {
-    sources += [ "default_search_policy_handler_unittest.cc" ]
-  }
 
   deps = [
     ":prepopulated_engines",
     ":test_support",
     "//base",
     "//components/google/core/browser",
-    "//components/policy",
-    "//components/policy:policy_component_test_support",
     "//components/pref_registry:test_support",
     "//components/webdata/common",
     "//sql",
     "//testing/gmock",
     "//testing/gtest",
     "//url",
   ]
+
+  if (enable_configuration_policy) {
+    sources += [ "default_search_policy_handler_unittest.cc" ]
+
+    deps += [
+      "//components/policy",
+      "//components/policy:policy_component_test_support",
+    ]
+  }
 }
 
 json_to_struct("prepopulated_engines") {
   visibility = [ ":*" ]
 
   source = "prepopulated_engines.json"
   schema_file = "prepopulated_engines_schema.json"
   namespace = "TemplateURLPrepopulateData"
 }