Move ranker_model_loader to a new component.

components/translate/core/browser/BUILD.gn

Index: components/translate/core/browser/BUILD.gn
diff --git a/components/translate/core/browser/BUILD.gn b/components/translate/core/browser/BUILD.gn
index f7ad715dc37ac52fb276e64f78bd83099ad58c7f..89c7645185ed22a7dda3832ab7bfd77d68a4696d 100644
--- a/components/translate/core/browser/BUILD.gn
+++ b/components/translate/core/browser/BUILD.gn
@@ -11,10 +11,6 @@ static_library("browser") {
     "language_state.cc",
     "language_state.h",
     "page_translated_details.h",
-    "ranker_model.cc",
-    "ranker_model.h",
-    "ranker_model_loader.cc",
-    "ranker_model_loader.h",
     "translate_accept_languages.cc",
     "translate_accept_languages.h",
     "translate_browser_metrics.cc",
@@ -60,9 +56,9 @@ static_library("browser") {
     "//components/metrics/proto",
     "//components/pref_registry",
     "//components/prefs",
+    "//components/ranker",
     "//components/resources:components_resources",
     "//components/strings",
-    "//components/translate/core/browser/proto",
     "//components/translate/core/common",
     "//components/ukm",
     "//components/variations",
@@ -100,8 +96,6 @@ source_set("unit_tests") {
     "mock_translate_driver.h",
     "mock_translate_ranker.cc",
     "mock_translate_ranker.h",
-    "ranker_model_loader_unittest.cc",
-    "ranker_model_unittest.cc",
     "translate_browser_metrics_unittest.cc",
     "translate_language_list_unittest.cc",
     "translate_manager_unittest.cc",
@@ -118,8 +112,8 @@ source_set("unit_tests") {
     "//components/pref_registry:pref_registry",
     "//components/prefs",
     "//components/prefs:test_support",
+    "//components/ranker",
     "//components/sync_preferences:test_support",
-    "//components/translate/core/browser/proto",
     "//components/translate/core/common",
     "//components/ukm",
     "//components/ukm:test_support",