chromeos: Remove PowerStateOverride.

chromeos/dbus/power_policy_controller.h

Index: chromeos/dbus/power_policy_controller.h
diff --git a/chromeos/dbus/power_policy_controller.h b/chromeos/dbus/power_policy_controller.h
index d0c0b46e912c04d9ef15c294055e3077a042aa83..3d45769b3e8384e90f2b00b829d835466481ea69 100644
--- a/chromeos/dbus/power_policy_controller.h
+++ b/chromeos/dbus/power_policy_controller.h
@@ -5,6 +5,9 @@
 #ifndef CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
 #define CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
 
+#include <map>
+#include <string>
+
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/prefs/pref_service.h"
@@ -53,6 +56,17 @@ class CHROMEOS_EXPORT PowerPolicyController
       const PrefService::Preference& use_video_activity_pref,
       const PrefService::Preference& presentation_idle_delay_factor_pref);
 
+  // Registers a request to temporarily prevent the screen from getting
+  // dimmed or turned off or the system from suspending in response to user
+  // inactivity.  Returns a unique ID that can be passed to RemoveBlock()
+  // later.
+  int AddScreenBlock(const std::string& reason);
+  int AddSuspendBlock(const std::string& reason);
+
+  // Unregisters a request previously created via AddScreenBlock() or
+  // AddSuspendBlock().
+  void RemoveBlock(int id);
+
   // DBusThreadManagerObserver implementation:
   virtual void OnDBusThreadManagerDestroying(DBusThreadManager* manager)
       OVERRIDE;
@@ -61,6 +75,8 @@ class CHROMEOS_EXPORT PowerPolicyController
   virtual void PowerManagerRestarted() OVERRIDE;
 
  private:
+  typedef std::map<int, std::string> BlockMap;
+
   // Sends a policy based on |prefs_policy_| to the power manager.
   void SendCurrentPolicy();
 
@@ -74,6 +90,18 @@ class CHROMEOS_EXPORT PowerPolicyController
   // UpdatePolicyFromPrefs().
   power_manager::PowerManagementPolicy prefs_policy_;
 
+  // Are one or more fields set in |prefs_policy_|?
+  bool prefs_were_set_;
+
+  // Maps from an ID representing a request to prevent the screen from
+  // getting dimmed or turned off or to prevent the system from suspending
+  // to the reason for the request.
+  BlockMap screen_blocks_;
+  BlockMap suspend_blocks_;
+
+  // Next ID to be used by AddScreenBlock() or AddSuspendBlock().
+  int next_block_id_;
+
   DISALLOW_COPY_AND_ASSIGN(PowerPolicyController);
 };