chromeos: move screen lock handling to power manager client

chrome/browser/chromeos/dbus/power_manager_client.h

Index: chrome/browser/chromeos/dbus/power_manager_client.h
diff --git a/chrome/browser/chromeos/dbus/power_manager_client.h b/chrome/browser/chromeos/dbus/power_manager_client.h
index 43f58a40ec92ae3e693e19462e6e6d05244b9186..28e3993d3fc83038ce8b47cebff360ef2f8c0c6e 100644
--- a/chrome/browser/chromeos/dbus/power_manager_client.h
+++ b/chrome/browser/chromeos/dbus/power_manager_client.h
@@ -54,6 +54,15 @@ class PowerManagerClient {
 
     // Called when the system resumes from suspend.
     virtual void SystemResumed() {}
+
+    // Called when the screen is locked.
+    virtual void LockScreen() {}
+
+    // Called when the screen is unlocked.
+    virtual void UnlockScreen() {}
+
+    // Called when the screen fails to unlock.
+    virtual void UnlockScreenFailed() {}
   };
 
   // Adds and removes the observer.
@@ -81,6 +90,18 @@ class PowerManagerClient {
   // encounters some error, it passes -1 to |callback|.
   virtual void CalculateIdleTime(const CalculateIdleTimeCallback& callback) = 0;
 
+  // Notifies PowerManager that a user requested to lock the screen.
+  virtual void NotifyScreenLockRequested() = 0;
+
+  // Notifies PowerManager that screen lock has been completed.
+  virtual void NotifyScreenLockCompleted() = 0;
+
+  // Notifies PowerManager that a user unlocked the screen.
+  virtual void NotifyScreenUnlockRequested() = 0;
+
+  // Notifies PowerManager that screen is unlocked.
+  virtual void NotifyScreenUnlockCompleted() = 0;
+
   // Creates the instance.
   static PowerManagerClient* Create(dbus::Bus* bus);