Move ranker_model_loader to a new component.

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/chrome_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//printing/features/features.gni")
 import("//rlz/features/features.gni")
 import("//testing/test.gni")
@@ skipping 103 matching lines @@
     "//components/password_manager/core/common:unit_tests",
     "//components/password_manager/sync/browser:unit_tests",
     "//components/payments/core:unit_tests",
     "//components/physical_web/data_source:unit_tests",
     "//components/physical_web/eddystone:unit_tests",
     "//components/precache/core:unit_tests",
     "//components/prefs:unit_tests",
     "//components/previews/core:unit_tests",
     "//components/proxy_config:unit_tests",
     "//components/query_parser:unit_tests",
+    "//components/ranker:unit_tests",
     "//components/rappor:unit_tests",
     "//components/reading_list/core:unit_tests",
     "//components/search:unit_tests",
     "//components/search_engines:unit_tests",
     "//components/search_provider_logos:unit_tests",
     "//components/security_state/core:unit_tests",
     "//components/sessions:unit_tests",
     "//components/signin/core/browser:unit_tests",
     "//components/ssl_config:unit_tests",
     "//components/ssl_errors:unit_tests",
@@ skipping 375 matching lines @@
       "//testing/perf",
       "//url",
     ]
 
     if (!is_ios) {
       sources += [ "discardable_memory/common/discardable_shared_memory_heap_perftest.cc" ]
       deps += [ "//components/discardable_memory/common" ]
     }
   }
 }