Introduce a layering in the invalidation component as public and impl

components/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("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 # Collection of all components. You wouldn't link to this, but this is rather
@@ skipping 37 matching lines @@
     "//components/favicon_base",
     "//components/feedback",
     "//components/gcm_driver",
     "//components/gcm_driver/instance_id",
     "//components/google/core/browser",
     "//components/history/content/browser",
     "//components/history/core/browser",
     "//components/history/core/common",
     "//components/history/core/test",
     "//components/infobars/core",
-    "//components/invalidation",
+    "//components/invalidation/impl",
     "//components/json_schema",
     "//components/keyed_service/content",
     "//components/language_usage_metrics",
     "//components/leveldb_proto",
     "//components/login",
     "//components/metrics",
     "//components/mime_util",
     "//components/navigation_interception",
     "//components/navigation_metrics",
     "//components/network_time",
@@ skipping 117 matching lines @@
       "//components/favicon/core",  # Blocked on keyed service.
       "//components/favicon_base",  # Should work, needs checking.
       "//components/feedback",  # Blocked on content.
       "//components/gcm_driver",  # Should work, needs checking.
       "//components/gcm_driver/instance_id",  # Should work, needs checking.
       "//components/google/core/browser",  # Should work, needs checking.
       "//components/history/core/browser",  # Should work, needs checking.
       "//components/history/core/common",  # Should work, needs checking.
       "//components/history/core/test",  # Should work, needs checking.
       "//components/infobars/core",  # Should work, needs checking.
-      "//components/invalidation",  # Should work, needs checking.
+      "//components/invalidation/impl",  # Should work, needs checking.
       "//components/json_schema",  # Should work, needs checking.
       "//components/keyed_service/content",  # Blocked on content.
       "//components/navigation_interception",  # Blocked on content.
       "//components/omnibox",  # Should work, needs checking.
       "//components/password_manager/content/browser",  # Blocked on content.
       "//components/password_manager/core/browser",  # Should work, needs checking.
       "//components/password_manager/core/common",  # Should work, needs checking.
       "//components/plugins/renderer",  # Blocked on blink.
       "//components/power",  # Blocked on content.
       "//components/policy",  # Blocked on content (indirectly via autofill).
@@ skipping 70 matching lines @@
     "//components/crx_file:unit_tests",
     "//components/data_reduction_proxy/content/browser:unit_tests",
     "//components/data_reduction_proxy/core/browser:unit_tests",
     "//components/data_reduction_proxy/core/common:unit_tests",
     "//components/device_event_log:unit_tests",
     "//components/devtools_http_handler:unit_tests",
     "//components/dom_distiller/core:unit_tests",
     "//components/domain_reliability:unit_tests",
     "//components/favicon_base:unit_tests",
     "//components/google/core/browser:unit_tests",
-    "//components/invalidation:unittests",
+    "//components/invalidation/impl:unittests",
     "//components/login:unit_tests",
     "//components/metrics:unit_tests",
     "//components/mime_util:unit_tests",
     "//components/offline_pages:unit_tests",
     "//components/omnibox:unit_tests",
     "//components/packed_ct_ev_whitelist:unit_tests",
     "//components/undo:unit_tests",
     "//components/update_client:unit_tests",
     "//components/variations:unit_tests",
     "//components/web_resource:unit_tests",
@@ skipping 127 matching lines @@
 
   deps = [
     "//base",
     "//base/test:test_support_perf",
     "//testing/gtest",
     "//testing/perf",
     "//content/test:test_support",
     "//components/visitedlink/browser",
   ]
 }