[On-device adaptive brightness] Implement a controller and add to browser.

Bug: 881215
Change-Id: I504764bd39f586d07e67eef1443565d4235a6a2c
Reviewed-on: https://chromium-review.googlesource.com/c/1322256Reviewed-by: Dan Erat <derat@chromium.org>
Commit-Queue: Jia Meng <jiameng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606770}

chrome/browser/chromeos/BUILD.gn

@@ -1604,6 +1604,8 @@ source_set("chromeos") {
     "power/auto_screen_brightness/brightness_monitor.h",
     "power/auto_screen_brightness/brightness_monitor_impl.cc",
     "power/auto_screen_brightness/brightness_monitor_impl.h",
+    "power/auto_screen_brightness/controller.cc",
+    "power/auto_screen_brightness/controller.h",
     "power/auto_screen_brightness/fake_als_reader.cc",
     "power/auto_screen_brightness/fake_als_reader.h",
     "power/auto_screen_brightness/fake_brightness_monitor.cc",

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

@@ -82,6 +82,7 @@
 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_local_account.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/controller.h"
 #include "chrome/browser/chromeos/power/freezer_cgroup_process_manager.h"
 #include "chrome/browser/chromeos/power/idle_action_warning_observer.h"
 #include "chrome/browser/chromeos/power/ml/adaptive_screen_brightness_manager.h"
@@ -1021,6 +1022,9 @@ void ChromeBrowserMainPartsChromeos::PostBrowserStart() {
         std::make_unique<power::ml::UserActivityController>();
   }
 
+  auto_screen_brightness_controller_ =
+      std::make_unique<power::auto_screen_brightness::Controller>();
+
   ChromeBrowserMainPartsLinux::PostBrowserStart();
 }
 
@@ -1081,6 +1085,7 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   user_activity_controller_.reset();
   adaptive_screen_brightness_manager_.reset();
   diagnosticsd_bridge_.reset();
+  auto_screen_brightness_controller_.reset();
 
   // Detach D-Bus clients before DBusThreadManager is shut down.
   idle_action_warning_observer_.reset();

chrome/browser/chromeos/chrome_browser_main_chromeos.h

@@ -62,6 +62,10 @@ namespace ml {
 class AdaptiveScreenBrightnessManager;
 class UserActivityController;
 }  // namespace ml
+
+namespace auto_screen_brightness {
+class Controller;
+}  // namespace auto_screen_brightness
 }  // namespace power
 
 // ChromeBrowserMainParts implementation for chromeos specific code.
@@ -141,6 +145,8 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
       adaptive_screen_brightness_manager_;
 
   std::unique_ptr<power::ml::UserActivityController> user_activity_controller_;
+  std::unique_ptr<power::auto_screen_brightness::Controller>
+      auto_screen_brightness_controller_;
 
   std::unique_ptr<DemoModeResourcesRemover> demo_mode_resources_remover_;
   std::unique_ptr<crostini::CrosvmMetrics> crosvm_metrics_;

chrome/browser/chromeos/power/auto_screen_brightness/controller.cc

+// Copyright 2018 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.
+
+#include "chrome/browser/chromeos/power/auto_screen_brightness/controller.h"
+
+#include "base/task/post_task.h"
+#include "base/time/default_tick_clock.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/adapter.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/als_reader_impl.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/brightness_monitor_impl.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/gaussian_trainer.h"
+#include "chrome/browser/chromeos/power/auto_screen_brightness/modeller_impl.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+
+namespace chromeos {
+namespace power {
+namespace auto_screen_brightness {
+
+Controller::Controller() {
+  als_reader_ = std::make_unique<AlsReaderImpl>();
+  als_reader_->Init();
+
+  chromeos::PowerManagerClient* power_manager_client =
+      chromeos::DBusThreadManager::Get()->GetPowerManagerClient();
+  DCHECK(power_manager_client);
+  brightness_monitor_ =
+      std::make_unique<BrightnessMonitorImpl>(power_manager_client);
+
+  ui::UserActivityDetector* user_activity_detector =
+      ui::UserActivityDetector::Get();
+  DCHECK(user_activity_detector);
+
+  const Profile* const profile = ProfileManager::GetPrimaryUserProfile();
+  DCHECK(profile);
+  modeller_ = std::make_unique<ModellerImpl>(
+      profile, als_reader_.get(), brightness_monitor_.get(),
+      user_activity_detector, std::make_unique<GaussianTrainer>());
+
+  adapter_ = std::make_unique<Adapter>(profile, als_reader_.get(),
+                                       brightness_monitor_.get(),
+                                       modeller_.get(), power_manager_client);
+}
+
+Controller::~Controller() = default;
+
+}  // namespace auto_screen_brightness
+}  // namespace power
+}  // namespace chromeos

chrome/browser/chromeos/power/auto_screen_brightness/controller.h

+// Copyright 2018 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_POWER_AUTO_SCREEN_BRIGHTNESS_CONTROLLER_H_
+#define CHROME_BROWSER_CHROMEOS_POWER_AUTO_SCREEN_BRIGHTNESS_CONTROLLER_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/sequenced_task_runner.h"
+
+namespace chromeos {
+namespace power {
+namespace auto_screen_brightness {
+
+class Adapter;
+class AlsReaderImpl;
+class BrightnessMonitorImpl;
+class ModellerImpl;
+
+// This controller class sets up and destroys all components needed for the auto
+// screen brightness feature.
+class Controller {
+ public:
+  Controller();
+  ~Controller();
+
+ private:
+  std::unique_ptr<AlsReaderImpl> als_reader_;
+  std::unique_ptr<BrightnessMonitorImpl> brightness_monitor_;
+  std::unique_ptr<ModellerImpl> modeller_;
+  std::unique_ptr<Adapter> adapter_;
+
+  DISALLOW_COPY_AND_ASSIGN(Controller);
+};
+
+}  // namespace auto_screen_brightness
+}  // namespace power
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_POWER_AUTO_SCREEN_BRIGHTNESS_CONTROLLER_H_