Remove unmapped media galleries histograms.

components/storage_monitor/storage_monitor_chromeos.cc

Index: components/storage_monitor/storage_monitor_chromeos.cc
diff --git a/components/storage_monitor/storage_monitor_chromeos.cc b/components/storage_monitor/storage_monitor_chromeos.cc
index 228cc4408c2f2aa04b965f46d51c4e57ab128990..edce2a560fd86c451149e766cdc97bc7eb447323 100644
--- a/components/storage_monitor/storage_monitor_chromeos.cc
+++ b/components/storage_monitor/storage_monitor_chromeos.cc
@@ -57,10 +57,6 @@ bool GetDeviceInfo(const DiskMountManager::MountPointInfo& mount_info,
     return false;
 
   std::string unique_id = MakeDeviceUniqueId(*disk);
-  // Keep track of device uuid and label, to see how often we receive empty
-  // values.
-  base::string16 device_label = base::UTF8ToUTF16(disk->device_label());
-  MediaStorageUtil::RecordDeviceInfoHistogram(true, unique_id, device_label);
   if (unique_id.empty())
     return false;
 
@@ -68,12 +64,11 @@ bool GetDeviceInfo(const DiskMountManager::MountPointInfo& mount_info,
       StorageInfo::REMOVABLE_MASS_STORAGE_WITH_DCIM :
       StorageInfo::REMOVABLE_MASS_STORAGE_NO_DCIM;
 
-  *info = StorageInfo(StorageInfo::MakeDeviceId(type, unique_id),
-                      mount_info.mount_path,
-                      device_label,
-                      base::UTF8ToUTF16(disk->vendor_name()),
-                      base::UTF8ToUTF16(disk->product_name()),
-                      disk->total_size_in_bytes());
+  *info = StorageInfo(
+      StorageInfo::MakeDeviceId(type, unique_id), mount_info.mount_path,
+      base::UTF8ToUTF16(disk->device_label()),
+      base::UTF8ToUTF16(disk->vendor_name()),
+      base::UTF8ToUTF16(disk->product_name()), disk->total_size_in_bytes());
   return true;
 }