Remove unmapped media galleries histograms.

components/storage_monitor/storage_monitor_mac.mm

 // 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 "components/storage_monitor/storage_monitor_mac.h"
 
 #include <stdint.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_util.h"
@@ skipping 220 matching lines @@
     if (ShouldPostNotificationForDisk(it->second)) {
       receiver()->ProcessDetach(it->second.device_id());
     }
   }
 
   if (update_type == UPDATE_DEVICE_REMOVED) {
     if (it != disk_info_map_.end())
       disk_info_map_.erase(it);
   } else {
     disk_info_map_[bsd_name] = info;
-    MediaStorageUtil::RecordDeviceInfoHistogram(true, info.device_id(),
-                                                info.storage_label());
     if (ShouldPostNotificationForDisk(info))
       receiver()->ProcessAttach(info);
   }
 
   // We're not really honestly sure we're done, but this looks the best we
   // can do. Any misses should go out through notifications.
   if (initialization_complete)
     MarkInitialized();
 }
 
@@ skipping 129 matching lines @@
     }
   }
   return false;
 }
 
 StorageMonitor* StorageMonitor::CreateInternal() {
   return new StorageMonitorMac();
 }
 
 }  // namespace storage_monitor