chromeos: Add power supply info reading capability

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2011 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/chrome_browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 113 matching lines @@
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #endif
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 #include "chrome/browser/first_run/upgrade_util_linux.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/audio_handler.h"
 #include "chrome/browser/chromeos/boot_times_loader.h"
-#include "chrome/browser/chromeos/brightness_observer.h"
 #include "chrome/browser/chromeos/cros_settings_names.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/screen_lock_library.h"
 #include "chrome/browser/chromeos/customization_document.h"
 #include "chrome/browser/chromeos/dbus/dbus_thread_manager.h"
 #include "chrome/browser/chromeos/external_metrics.h"
 #include "chrome/browser/chromeos/login/authenticator.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/chromeos/login/ownership_service.h"
 #include "chrome/browser/chromeos/login/screen_locker.h"
@@ skipping 1662 matching lines @@
 #if defined(OS_WIN)
   fragmentation_checker::RecordFragmentationMetricForCurrentModule();
 #endif
 
 #if defined(OS_CHROMEOS)
   metrics->StartExternalMetrics();
 
   // Initialize the audio handler on ChromeOS.
   chromeos::AudioHandler::Initialize();
 
-  // Initialize the brightness observer so that we'll display an onscreen
-  // indication of brightness changes during login.
-  static chromeos::BrightnessObserver* brightness_observer =
-      new chromeos::BrightnessObserver();
-  chromeos::DBusThreadManager::Get()->power_manager_client()->AddObserver(
-      brightness_observer);
-
   // Listen for system key events so that the user will be able to adjust the
   // volume on the login screen.
   chromeos::SystemKeyEventListener::Initialize();
 
   // Listen for XI_HierarchyChanged events.
   chromeos::XInputHierarchyChangedEventListener::GetInstance();
 #endif
 
   // The extension service may be available at this point. If the command line
   // specifies --uninstall-extension, attempt the uninstall extension startup
@@ skipping 267 matching lines @@
   if (env->GetVar(chrome::kPreReadEnvironmentVariable, &pre_read) &&
       (pre_read == "0" || pre_read == "1")) {
     std::string uma_name(name);
     uma_name += "_PreRead";
     uma_name += pre_read == "1" ? "Enabled" : "Disabled";
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }