Remove DeviceLightEvent implementation

device/sensors/data_fetcher_shared_memory_chromeos.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "device/sensors/data_fetcher_shared_memory.h"
 
 #include "device/sensors/sensor_manager_chromeos.h"
 
 namespace device {
 
@@ skipping 20 matching lines @@
           static_cast<DeviceOrientationHardwareBuffer*>(buffer);
       // Absolute device orientation not available on Chrome OS, let the
       // implementation fire an all-null event to signal this to blink.
       orientation_absolute_buffer_->seqlock.WriteBegin();
       orientation_absolute_buffer_->data.absolute = true;
       orientation_absolute_buffer_->data.all_available_sensors_are_active =
           true;
       orientation_absolute_buffer_->seqlock.WriteEnd();
       return false;
     }
-    case CONSUMER_TYPE_LIGHT:
-      NOTIMPLEMENTED();
-      return false;
   }
   NOTREACHED();
   return false;
 }
 
 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) {
   switch (consumer_type) {
     case CONSUMER_TYPE_MOTION:
       return sensor_manager_->StopFetchingDeviceMotionData();
     case CONSUMER_TYPE_ORIENTATION:
       return sensor_manager_->StopFetchingDeviceOrientationData();
     case CONSUMER_TYPE_ORIENTATION_ABSOLUTE:
       if (orientation_absolute_buffer_) {
         orientation_absolute_buffer_->seqlock.WriteBegin();
         orientation_absolute_buffer_->data.all_available_sensors_are_active =
             false;
         orientation_absolute_buffer_->seqlock.WriteEnd();
         orientation_absolute_buffer_ = nullptr;
       }
       return true;
-    case CONSUMER_TYPE_LIGHT:
-      NOTIMPLEMENTED();
-      return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace device