Files.app: Add new metadata properties that are needed for ImageEncoder.

BUG=410766
TEST=None

Review URL: https://codereview.chromium.org/957663003

Cr-Commit-Position: refs/heads/master@{#317999}

ui/file_manager/file_manager/foreground/js/metadata/content_metadata_provider.js

@@ -53,11 +53,14 @@ function ContentMetadataProvider(cache, opt_messagePort) {
  * @const {!Array<string>}
  */
 ContentMetadataProvider.PROPERTY_NAMES = [
-  'contentThumbnailUrl',
-  'contentThumbnailTransform',
   'contentImageTransform',
-  'mediaTitle',
-  'mediaArtist'
+  'contentThumbnailTransform',
+  'contentThumbnailUrl',
+  'exifLittleEndian',
+  'ifd',
+  'mediaArtist',
+  'mediaMimeType',
+  'mediaTitle'
 ];
 
 /**
@@ -75,11 +78,14 @@ ContentMetadataProvider.WORKER_SCRIPT =
  */
 ContentMetadataProvider.convertContentMetadata = function(metadata) {
   var item = new MetadataItem();
-  item.contentThumbnailUrl = metadata['thumbnailURL'];
-  item.contentThumbnailTransform = metadata['thumbnailTransform'];
   item.contentImageTransform = metadata['imageTransform'];
-  item.mediaTitle = metadata['title'];
+  item.contentThumbnailTransform = metadata['thumbnailTransform'];
+  item.contentThumbnailUrl = metadata['thumbnailURL'];
+  item.exifLittleEndian = metadata['littleEndian'];
+  item.ifd = metadata['ifd'];
   item.mediaArtist = metadata['artist'];
+  item.mediaMimeType = metadata['mimeType'];
+  item.mediaTitle = metadata['title'];
   return item;
 };
 

ui/file_manager/file_manager/foreground/js/metadata/metadata_item.js

@@ -138,4 +138,22 @@ function MetadataItem() {
    * @public {string|undefined}
    */
   this.mediaArtist;
+
+  /**
+   * Mime type obtained by content provider based on URL.
+   * TODO(hirono): Remove the mediaMimeType.
+   * @public {string|undefined}
+   */
+  this.mediaMimeType;
+
+  /**
+   * "Image File Directory" obtained from EXIF header.
+   * @public {!Object|undefined}
+   */
+  this.ifd;
+
+  /**
+   * @public {boolean|undefined}
+   */
+  this.exifLittleEndian;
 }