Correcly Report CanEnterMaximizeMode on devices without accelerometers

chromeos/accelerometer/accelerometer_reader.h

Index: chromeos/accelerometer/accelerometer_reader.h
diff --git a/chromeos/accelerometer/accelerometer_reader.h b/chromeos/accelerometer/accelerometer_reader.h
index c2adde8db0d8970eef2431a86936272639464888..cca75050eced76d6b92411979732b51301961f4f 100644
--- a/chromeos/accelerometer/accelerometer_reader.h
+++ b/chromeos/accelerometer/accelerometer_reader.h
@@ -90,6 +90,9 @@ class CHROMEOS_EXPORT AccelerometerReader {
   // The last seen accelerometer data.
   AccelerometerUpdate update_;
 
+  // True if a valid accelerometer update is available.
+  bool has_update_;
+
   // The accelerometer configuration.
   scoped_refptr<Configuration> configuration_;