Gallery.app: Fix image rotation in the image editor.

ui/file_manager/gallery/js/slide_mode.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 'use strict';
 
 /**
  * Slide mode displays a single image and has a set of controls to navigate
  * between the images and to edit an image.
  *
@@ skipping 920 matching lines @@
  * @private
  */
 SlideMode.prototype.saveCurrentImage_ = function(callback) {
   var item = this.getSelectedItem();
   var oldEntry = item.getEntry();
   var canvas = this.imageView_.getCanvas();
 
   this.showSpinner_(true);
   var metadataEncoder = ImageEncoder.encodeMetadata(
       this.selectedImageMetadata_.media, canvas, 1 /* quality */);
-
-  this.selectedImageMetadata_ = ContentProvider.ConvertContentMetadata(
+  var selectedImageMetadata = ContentProvider.ConvertContentMetadata(
       metadataEncoder.getMetadata(), this.selectedImageMetadata_);
+  this.selectedImageMetadata_ = selectedImageMetadata;
+  this.metadataCache_.set(oldEntry,
+                          Gallery.METADATA_TYPE,
+                          selectedImageMetadata);
 
   item.saveToFile(
       this.context_.saveDirEntry,
       this.shouldOverwriteOriginal_(),
       canvas,
       metadataEncoder,
       function(success) {
         // TODO(kaznacheev): Implement write error handling.
         // Until then pretend that the save succeeded.
         this.showSpinner_(false);
         this.flashSavedLabel_();
 
         var event = new Event('content');
         event.item = item;
         event.oldEntry = oldEntry;
-        event.metadata = this.selectedImageMetadata_;
+        event.metadata = selectedImageMetadata;
         this.dataModel_.dispatchEvent(event);
 
         // Allow changing the 'Overwrite original' setting only if the user
         // used Undo to restore the original image AND it is not a copy.
         // Otherwise lock the setting in its current state.
         var mayChangeOverwrite = !this.editor_.canUndo() && item.isOriginal();
         ImageUtil.setAttribute(this.options_, 'saved', !mayChangeOverwrite);
 
         if (this.imageView_.getContentRevision() === 1) {  // First edit.
           ImageUtil.metrics.recordUserAction(ImageUtil.getMetricName('Edit'));
@@ skipping 365 matching lines @@
       done = true;
     }
   }.bind(this);
 };
 
 /**
  * If the user touched the image and moved the finger more than SWIPE_THRESHOLD
  * horizontally it's considered as a swipe gesture (change the current image).
  */
 SwipeOverlay.SWIPE_THRESHOLD = 100;