[fsp] Remove the unused streaming field.

ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js

Index: ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js
diff --git a/ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js b/ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js
index 4da1126bf56e5529d8510ab59c1a925b767540b1..92c9aec757daff1557884dce693f7fda07a5eaec 100644
--- a/ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js
+++ b/ui/file_manager/file_manager/foreground/js/metadata/metadata_cache.js
@@ -13,7 +13,6 @@
  *   filesystem: size, modificationTime
  *   internal: presence
  *   drive: pinned, present, hosted, availableOffline
- *   streaming: (no property)
  *
  *   Following are not fetched for non-present drive files.
  *   media: artist, album, title, width, height, imageTransform, etc.
@@ -763,7 +762,6 @@ FilesystemProvider.prototype.fetch = function(
  * This provider returns the following objects:
  *     drive: { pinned, hosted, present, customIconUrl, etc. }
  *     thumbnail: { url, transform }
- *     streaming: { }
  * @param {VolumeManagerWrapper} volumeManager Volume manager instance.
  * @constructor
  */
@@ -803,7 +801,7 @@ DriveProvider.prototype.supportsEntry = function(entry) {
  */
 DriveProvider.prototype.providesType = function(type) {
   return type === 'drive' || type === 'thumbnail' ||
-      type === 'streaming' || type === 'media' || type === 'filesystem';
+      type === 'media' || type === 'filesystem';
 };
 
 /**
@@ -889,15 +887,12 @@ DriveProvider.prototype.convert_ = function(data, entry) {
   } else if (data.isPresent) {
     result.thumbnail = null;
   } else {
-    // Block the local fetch for drive files, which require downloading.
+    // Not present in cache, so do not allow to generate it by next providers.
     result.thumbnail = {url: '', transform: null};
   }
 
+  // If present in cache, then allow to fetch media by next providers.
   result.media = data.isPresent ? null : {};
-  // Indicate that the data is not available in local cache.
-  // It used to have a field 'url' for streaming play, but it is
-  // derprecated. See crbug.com/174560.
-  result.streaming = data.isPresent ? null : {};
 
   return result;
 };