alloy: Remove optimization/prediction service usage (see issue #3352)

This service is required by the "PermissionOnDeviceNotificationPredictions"
feature which is enabled by default in https://crbug.com/1350956. It uses a
Google backend service as described at https://go.dev/solutions/google/chrome.

This change removes the usage of PredictionBasedPermissionUiSelector, which
triggered this dependency, along with related startup complexity that was added
to support the optimization/prediction service in the M106 update.

libcef/browser/browser_context_keyed_service_factories.cc

@@ -14,17 +14,12 @@
 #include "chrome/browser/spellchecker/spellcheck_factory.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
-#include "components/optimization_guide/machine_learning_tflite_buildflags.h"
 #include "components/permissions/features.h"
 #include "extensions/browser/api/alarms/alarm_manager.h"
 #include "extensions/browser/api/storage/storage_frontend.h"
 #include "extensions/browser/renderer_startup_helper.h"
 #include "services/network/public/cpp/features.h"
 
-#if BUILDFLAG(BUILD_WITH_TFLITE_LIB)
-#include "chrome/browser/permissions/prediction_model_handler_factory.h"
-#endif
-
 namespace cef {
 
 void EnsureBrowserContextKeyedServiceFactoriesBuilt() {
@@ -45,13 +40,6 @@ void EnsureBrowserContextKeyedServiceFactoriesBuilt() {
   if (base::FeatureList::IsEnabled(network::features::kReduceAcceptLanguage)) {
     ReduceAcceptLanguageFactory::GetInstance();
   }
-
-#if BUILDFLAG(BUILD_WITH_TFLITE_LIB)
-  if (base::FeatureList::IsEnabled(
-          permissions::features::kPermissionOnDeviceNotificationPredictions)) {
-    PredictionModelHandlerFactory::GetInstance();
-  }
-#endif  // BUILDFLAG(BUILD_WITH_TFLITE_LIB)
 }
 
 }  // namespace cef