[Remote suggestions] Refactor the scheduler

components/ntp_snippets/BUILD.gn

Index: components/ntp_snippets/BUILD.gn
diff --git a/components/ntp_snippets/BUILD.gn b/components/ntp_snippets/BUILD.gn
index 2d31f2ff49913a4bd09abce49c3fc15d51a731df..fc2cbcd34944a5b300ec4ef4571586d7b3d1a0e5 100644
--- a/components/ntp_snippets/BUILD.gn
+++ b/components/ntp_snippets/BUILD.gn
@@ -61,14 +61,14 @@ static_library("ntp_snippets") {
     "remote/remote_suggestions_provider_impl.cc",
     "remote/remote_suggestions_provider_impl.h",
     "remote/remote_suggestions_scheduler.h",
+    "remote/remote_suggestions_scheduler_impl.cc",
+    "remote/remote_suggestions_scheduler_impl.h",
     "remote/remote_suggestions_status_service.cc",
     "remote/remote_suggestions_status_service.h",
     "remote/request_params.cc",
     "remote/request_params.h",
     "remote/request_throttler.cc",
     "remote/request_throttler.h",
-    "remote/scheduling_remote_suggestions_provider.cc",
-    "remote/scheduling_remote_suggestions_provider.h",
     "sessions/foreign_sessions_suggestions_provider.cc",
     "sessions/foreign_sessions_suggestions_provider.h",
     "sessions/tab_delegate_sync_adapter.cc",
@@ -146,9 +146,9 @@ source_set("unit_tests") {
     "remote/remote_suggestions_database_unittest.cc",
     "remote/remote_suggestions_fetcher_unittest.cc",
     "remote/remote_suggestions_provider_impl_unittest.cc",
+    "remote/remote_suggestions_scheduler_impl_unittest.cc",
     "remote/remote_suggestions_status_service_unittest.cc",
     "remote/request_throttler_unittest.cc",
-    "remote/scheduling_remote_suggestions_provider_unittest.cc",
     "remote/test_utils.cc",
     "remote/test_utils.h",
     "sessions/foreign_sessions_suggestions_provider_unittest.cc",
@@ -180,6 +180,7 @@ source_set("unit_tests") {
     "//components/sync:test_support_driver",
     "//components/sync_sessions",
     "//components/variations:test_support",
+    "//components/web_resource:web_resource",
     "//net:test_support",
     "//testing/gtest",
     "//third_party/icu/",