Componentize TopSites, TopSitesBackend, TopSitesDatabase

components/history/core/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("//third_party/protobuf/proto_library.gni")
 
 static_library("browser") {
   sources = [
     "download_constants.h",
     "download_database.cc",
@@ skipping 23 matching lines @@
     "in_memory_database.h",
     "in_memory_url_index_types.cc",
     "in_memory_url_index_types.h",
     "keyword_id.h",
     "keyword_search_term.cc",
     "keyword_search_term.h",
     "page_usage_data.cc",
     "page_usage_data.h",
     "thumbnail_database.cc",
     "thumbnail_database.h",
+    "top_sites.cc",
+    "top_sites.h",
+    "top_sites_backend.cc",
+    "top_sites_backend.h",
     "top_sites_cache.cc",
     "top_sites_cache.h",
+    "top_sites_database.cc",
+    "top_sites_database.h",
     "top_sites_observer.h",
     "url_database.cc",
     "url_database.h",
     "url_row.cc",
     "url_row.h",
     "url_utils.cc",
     "url_utils.h",
     "visit_database.cc",
     "visit_database.h",
     "visit_filter.cc",
     "visit_filter.h",
     "visit_tracker.cc",
     "visit_tracker.h",
     "visitsegment_database.cc",
     "visitsegment_database.h",
   ]
 
   deps = [
     "//base",
     "//components/favicon_base",
     "//components/keyed_service/core",
     "//components/query_parser",
     "//net",
+    "//skia",
     "//sql",
     "//third_party/sqlite",
     "//ui/base",
     "//ui/gfx",
     "//url",
   ]
 
   if (is_android) {
     sources += [
       "android/android_cache_database.cc",
@@ skipping 15 matching lines @@
       "android/visit_sql_handler.h",
     ]
   }
 }
 
 proto_library("proto") {
   sources = [
     "in_memory_url_index_cache.proto",
   ]
 }