chromeos: Stop calling ProfileManager::GetDefaultProfile() from extension event dispatch functions

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index dbea8c98dfb2f635c74d326debdbae8b47ec7820..b841678bf2de2b621af5714b4d7094dbf3fc77d1 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -457,10 +457,10 @@ void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   //
   // Initialize the brightness observer so that we'll display an onscreen
   // indication of brightness changes during login.
-  brightness_observer_.reset(new chromeos::BrightnessObserver());
+  brightness_observer_.reset(new chromeos::BrightnessObserver(profile()));
   output_observer_.reset(new chromeos::OutputObserver());
-  resume_observer_.reset(new chromeos::ResumeObserver());
-  screen_lock_observer_.reset(new chromeos::ScreenLockObserver());
+  resume_observer_.reset(new chromeos::ResumeObserver(profile()));
+  screen_lock_observer_.reset(new chromeos::ScreenLockObserver(profile()));
   if (chromeos::KioskModeSettings::Get()->IsKioskModeEnabled())
     power_state_override_.reset(new chromeos::PowerStateOverride());