implement ios for translate event.

ios/chrome/browser/translate/BUILD.gn

 # Copyright 2016 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("translate") {
   sources = [
     "after_translate_infobar_controller.h",
     "after_translate_infobar_controller.mm",
     "before_translate_infobar_controller.h",
     "before_translate_infobar_controller.mm",
@@ skipping 17 matching lines @@
   ]
   deps = [
     "//base",
     "//components/infobars/core",
     "//components/keyed_service/core",
     "//components/keyed_service/ios",
     "//components/metrics",
     "//components/metrics/proto",
     "//components/prefs",
     "//components/strings",
+    "//components/sync",
     "//components/translate/core/browser",
     "//components/translate/core/common",
     "//components/translate/ios/browser",
     "//components/web_resource",
     "//ios/chrome/app/strings",
     "//ios/chrome/app/theme",
     "//ios/chrome/browser",
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/infobars",
+    "//ios/chrome/browser/sync",
     "//ios/chrome/browser/ui/infobars",
     "//ios/web",
     "//ui/base",
     "//ui/gfx",
     "//url",
   ]
 
   allow_circular_includes_from = [ "//ios/chrome/browser/infobars" ]
 }
 
@@ skipping 46 matching lines @@
     "//ios/chrome/test/earl_grey:test_support",
     "//ios/testing:ios_test_support",
     "//ios/third_party/earl_grey",
     "//ios/web/public/test",
     "//ios/web/public/test/http_server",
     "//net",
     "//ui/base",
   ]
   libs = [ "XCTest.framework" ]
 }