HiDPI assets for Chrome OS Files app

chrome/browser/resources/file_manager/js/file_type.js

Index: chrome/browser/resources/file_manager/js/file_type.js
diff --git a/chrome/browser/resources/file_manager/js/file_type.js b/chrome/browser/resources/file_manager/js/file_type.js
index fda21243f75069e0e19fdfc7237a25e76041479e..3ce03216ba2d02f17b2ddd4f20c8b7deeec3e5f1 100644
--- a/chrome/browser/resources/file_manager/js/file_type.js
+++ b/chrome/browser/resources/file_manager/js/file_type.js
@@ -96,17 +96,6 @@ FileType.types = [
 ];
 
 /**
- * Map from file type to preview art.
- */
-FileType.previewArt = {
-  'audio': 'images/filetype_large_audio.png',
-  'folder': 'images/filetype_large_folder.png',
-  'unknown': 'images/filetype_large_generic.png',
-  'image': 'images/filetype_large_image.png',
-  'video': 'images/filetype_large_video.png'
-};
-
-/**
  * A special type for directory.
  */
 FileType.DIRECTORY = {name: 'FOLDER', type: '.folder', icon: 'folder'};
@@ -222,13 +211,3 @@ FileType.getIcon = function(file) {
   var fileType = FileType.getType(file);
   return fileType.icon || fileType.type || 'unknown';
 };
-
-/**
- * Get the preview url for a given type.
- *
- * @param {string} type File type from FileType.types.
- * @return {string} Path to preview art.
- */
-FileType.getPreviewArt = function(type) {
-  return FileType.previewArt[type] || FileType.previewArt['unknown'];
-};