Screensaver implementation for ChromeOS.

chromeos/dbus/power_manager_client.cc

Index: chromeos/dbus/power_manager_client.cc
diff --git a/chromeos/dbus/power_manager_client.cc b/chromeos/dbus/power_manager_client.cc
index 0dfa12b4e8d4b3076cd25e3a8aef93e4e1274252..811974410823ab3b64b40275ba83aa60f7252263 100644
--- a/chromeos/dbus/power_manager_client.cc
+++ b/chromeos/dbus/power_manager_client.cc
@@ -10,6 +10,7 @@
 #include "base/callback.h"
 #include "base/format_macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
 #include "base/observer_list.h"
 #include "base/stringprintf.h"
 #include "base/threading/platform_thread.h"
@@ -800,7 +801,15 @@ class PowerManagerClientStubImpl : public PowerManagerClient {
     callback.Run(0);
   }
 
-  virtual void RequestIdleNotification(int64 threshold) OVERRIDE {}
+  virtual void RequestIdleNotification(int64 threshold) OVERRIDE {
+    MessageLoop::current()->PostDelayedTask(
+        FROM_HERE,
+        base::Bind(&PowerManagerClientStubImpl::TriggerIdleNotify,
+                   base::Unretained(this),
+                   threshold),
+        base::TimeDelta::FromMilliseconds(threshold));
+  }
+
   virtual void NotifyUserActivity(
       const base::TimeTicks& last_activity_time) OVERRIDE {}
   virtual void NotifyVideoActivity(
@@ -863,6 +872,10 @@ class PowerManagerClientStubImpl : public PowerManagerClient {
                       BrightnessChanged(brightness_level, user_initiated));
   }
 
+  void TriggerIdleNotify(int64 threshold) {
+    FOR_EACH_OBSERVER(Observer, observers_, IdleNotify(threshold));
+  }
+
   bool discharging_;
   int battery_percentage_;
   double brightness_;