Remove unmapped media galleries histograms.

components/storage_monitor/media_storage_util.h

 // 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.
 
 // MediaStorageUtil provides information about storage devices attached
 // to the computer.
 
 #ifndef COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_
 #define COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_
 
@@ skipping 32 matching lines @@
   // (from the root of the device).
   static bool GetDeviceInfoFromPath(const base::FilePath& path,
                                     StorageInfo* device_info,
                                     base::FilePath* relative_path);
 
   // Get a base::FilePath for the given |device_id|.  If the device isn't a mass
   // storage type, the base::FilePath will be empty.  This does not check that
   // the device is connected.
   static base::FilePath FindDevicePathById(const std::string& device_id);
 
-  // Record device information histogram for the given |device_uuid| and
-  // |device_label|. |mass_storage| indicates whether the current device is a
-  // mass storage device, as defined by IsMassStorageDevice().
-  static void RecordDeviceInfoHistogram(bool mass_storage,
-                                        const std::string& device_uuid,
-                                        const base::string16& device_label);
-
   // Returns true if the |id| is both a removable device and also
   // currently attached.
   static bool IsRemovableStorageAttached(const std::string& id);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(MediaStorageUtil);
 };
 
 }  // namespace storage_monitor
 
 #endif  // COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_