Reland of 260688: [Files.app] Use getDriveEntryProperties to retrieve metadata

chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js

Index: chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
diff --git a/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js b/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
index 64c424dfce7d993b1a2d4a9164c7656183a1f95c..172d2a8033e43c8867b0d8a26e4554f87a808946 100644
--- a/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
+++ b/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
@@ -115,8 +115,10 @@ MetadataCache.EVICTION_THRESHOLD_MARGIN = 500;
  */
 MetadataCache.createFull = function(volumeManager) {
   var cache = new MetadataCache();
-  cache.providers_.push(new FilesystemProvider());
+  // DriveProvider should be prior to FileSystemProvider, because it covers
+  // FileSystemProvider for files in Drive.
   cache.providers_.push(new DriveProvider(volumeManager));
+  cache.providers_.push(new FilesystemProvider());
   cache.providers_.push(new ContentProvider());
   return cache;
 };
@@ -735,7 +737,7 @@ DriveProvider.prototype.supportsEntry = function(entry) {
  */
 DriveProvider.prototype.providesType = function(type) {
   return type === 'drive' || type === 'thumbnail' ||
-      type === 'streaming' || type === 'media';
+      type === 'streaming' || type === 'media' || type === 'filesystem';
 };
 
 /**
@@ -839,6 +841,11 @@ DriveProvider.prototype.convert_ = function(data, entry) {
     shared: data.shared
   };
 
+  result.filesystem = {
+    size: (entry.isFile ? (data.fileSize || 0) : -1),

[hirono, 2014/03/14 08:47:29]

Currently the size of directories on the drive are 0.
Maybe keeping 0 is better for avoiding regression.

[yoshiki, 2014/03/14 10:03:11]

Yes, I completely agree with you. Done.

+    modificationTime: new Date(data.lastModifiedTime)
+  };
+
   if (!data.isPresent) {
     // Block the local fetch for drive files, which require downloading.
     result.thumbnail = {url: '', transform: null};