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

chrome/browser/chromeos/power/screen_lock_observer.cc

Index: chrome/browser/chromeos/power/screen_lock_observer.cc
diff --git a/chrome/browser/chromeos/power/screen_lock_observer.cc b/chrome/browser/chromeos/power/screen_lock_observer.cc
index 419a4891529f42965aad58270ec3bce6d55a0e73..3a731814c826fd3e17bf6368c15dc361920710f6 100644
--- a/chrome/browser/chromeos/power/screen_lock_observer.cc
+++ b/chrome/browser/chromeos/power/screen_lock_observer.cc
@@ -9,7 +9,8 @@
 
 namespace chromeos {
 
-ScreenLockObserver::ScreenLockObserver() {
+ScreenLockObserver::ScreenLockObserver(Profile* profile)
+    : profile_(profile) {
   DBusThreadManager::Get()->GetSessionManagerClient()->AddObserver(this);
 }
 
@@ -18,7 +19,7 @@ ScreenLockObserver::~ScreenLockObserver() {
 }
 
 void ScreenLockObserver::UnlockScreen() {
-  extensions::DispatchScreenUnlockedEvent();
+  extensions::DispatchScreenUnlockedEvent(profile_);
 }
 
 }  // namespace chromeos