Fix the indirect pure virtual calls in DataFetcherSharedMemoryBase destructor.

content/browser/device_sensors/data_fetcher_shared_memory_mac.cc

 // Copyright 2014 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 "data_fetcher_shared_memory.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h"
 
@@ skipping 77 matching lines @@
 }
 
 }  // namespace
 
 namespace content {
 
 DataFetcherSharedMemory::DataFetcherSharedMemory() {
 }
 
 DataFetcherSharedMemory::~DataFetcherSharedMemory() {
+  StopFetchingAllDeviceData();
 }
 
 void DataFetcherSharedMemory::Fetch(unsigned consumer_bitmask) {
   DCHECK(base::MessageLoop::current() == GetPollingMessageLoop());
   DCHECK(sudden_motion_sensor_);
   DCHECK(consumer_bitmask & CONSUMER_TYPE_ORIENTATION ||
          consumer_bitmask & CONSUMER_TYPE_MOTION);
 
   if (consumer_bitmask & CONSUMER_TYPE_ORIENTATION)
     FetchOrientation(sudden_motion_sensor_.get(), orientation_buffer_);
@@ skipping 69 matching lines @@
         orientation_buffer_ = NULL;
       }
       return true;
     default:
       NOTREACHED();
   }
   return false;
 }
 
 }  // namespace content