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..5064226afa5df326ed3e6ae2b5a203a7d77994a9 100644
--- a/chromeos/accelerometer/accelerometer_reader.h
+++ b/chromeos/accelerometer/accelerometer_reader.h
@@ -90,6 +90,10 @@ class CHROMEOS_EXPORT AccelerometerReader {
   // The last seen accelerometer data.
   AccelerometerUpdate update_;
 
+  // True if OnDataRead has been called with success == true, and observers can

[flackr, 2015/02/06 20:18:20]

nit: Observers can be notified is implementation details. This really just means
true if update_ has a valid accelerometer update. Could even call it
has_update_.

[jonross, 2015/02/09 14:54:48]

Done.

+  // be notified.
+  bool successful_reading_;
+
   // The accelerometer configuration.
   scoped_refptr<Configuration> configuration_;