[filebrowser] More reliable file saving in Photo Editor

chrome/browser/resources/file_manager/js/metadata_parser.js

Index: chrome/browser/resources/file_manager/js/metadata_parser.js
diff --git a/chrome/browser/resources/file_manager/js/metadata_parser.js b/chrome/browser/resources/file_manager/js/metadata_parser.js
index 684ea3fb42a5a41e8eb8c6fbf6f27cc4e7b002e1..a4c2c29f7f2ca7db5c48402994996cdf35a62edd 100644
--- a/chrome/browser/resources/file_manager/js/metadata_parser.js
+++ b/chrome/browser/resources/file_manager/js/metadata_parser.js
@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-function MetadataParser(parent) {
+function MetadataParser(parent, type, urlFilter) {
   this.parent_ = parent;
+  this.type = type;
+  this.urlFilter = urlFilter;
   this.verbose = parent.verbose;
 }
 
@@ -19,3 +21,25 @@ MetadataParser.prototype.vlog = function(var_args) {
   if (this.verbose)
     this.parent_.log.apply(this.parent_, arguments);
 };
+
+MetadataParser.prototype.createDefaultMetadata = function() { return {} };
+
+MetadataParser.prototype.acceptsMimeType = function(mimeType) { return false };
+
+
+/* Base class for image metadata parsers */
+function ImageParser(parent, type, urlFilter) {
+  MetadataParser.apply(this, arguments);
+  this.mimeType = 'image/' + this.type;
+}
+
+ImageParser.prototype = {__proto__: MetadataParser.prototype};
+
+ImageParser.prototype.createDefaultMetadata = function() {
+  return { mimeType: this.mimeType };
+};
+
+ImageParser.prototype.acceptsMimeType = function(mimeType) {
+  return mimeType == this.mimeType;
+}
+