Introduce a layering in the invalidation component as public and impl

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/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//third_party/protobuf/proto_library.gni")
 
@@ skipping 96 matching lines @@
     "//components/favicon/core",
     "//components/favicon_base",
     "//components/gcm_driver",
     "//components/gcm_driver/instance_id",
     "//components/google/core/browser",
     "//components/guest_view/browser",
     "//components/handoff",
     "//components/history/core/browser",
     "//components/history/core/common",
     "//components/infobars/core",
-    "//components/invalidation",
+    "//components/invalidation/impl",
     "//components/metrics:gpu",
     "//components/metrics:net",
     "//components/metrics:profiler",
     "//components/metrics/proto:proto",
     "//components/mime_util",
     "//components/navigation_metrics",
     "//components/network_time",
     "//components/offline_pages",
     "//components/omnibox",
     "//components/os_crypt",
@@ skipping 894 matching lines @@
 
   public_deps = [
     ":browser",
     "//chrome/browser/ui:test_support",
   ]
   deps = [
     "//base:prefs_test_support",
     "//chrome/browser",
     "//chrome/common",
     "//chrome/common/safe_browsing:proto",
-    "//components/invalidation",
-    "//components/invalidation:test_support",
+    "//components/invalidation/impl",
+    "//components/invalidation/impl:test_support",
     "//components/password_manager/core/browser:test_support",
     "//components/search_engines:test_support",
     "//content/test:test_support",
     "//chrome/app/theme:theme_resources",
     "//net:test_support",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gfx",
   ]
@@ skipping 136 matching lines @@
     ]
   }
 
   if (enable_wifi_bootstrapping) {
     sources += [
       "local_discovery/wifi/mock_wifi_manager.cc",
       "local_discovery/wifi/mock_wifi_manager.h",
     ]
   }
 }