Revert of Media Galleries Partial Deprecation: Remove image metadata & libexif.

chrome/common/extensions/api/media_galleries.idl

 // Copyright (c) 2012 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 the <code>chrome.mediaGalleries</code> API to access media files (audio,
 // images, video) from the user's local disks (with the user's consent).
 namespace mediaGalleries {
 
   [inline_doc] enum GalleryChangeType {
     // The contents of the gallery have changed.
@@ skipping 110 matching lines @@
     DOMString type;
 
     // An unfiltered string->string dictionary of tags for the stream.
     object tags;
   };
 
   dictionary MediaMetadata {
     // The browser sniffed mime type.
     DOMString mimeType;
 
-    // Defined for video. In pixels.
+    // Defined for images and video. In pixels.
     long? height;
     long? width;
 
+    // Defined for images only.
+    double? xResolution;
+    double? yResolution;
+
     // Defined for audio and video. In seconds.
     double? duration;
 
-    // Defined for video. In degrees.
+    // Defined for images and video. In degrees.
     long? rotation;
 
-    // Defined for audio and video.
+    // Defined for images only.
+    DOMString? cameraMake;
+    DOMString? cameraModel;
+    double? exposureTimeSeconds;
+    boolean? flashFired;
+    double? fNumber;
+    double? focalLengthMm;
+    double? isoEquivalent;
+
+    // Defined for audio and video only.
     DOMString? album;
     DOMString? artist;
     DOMString? comment;
     DOMString? copyright;
     long? disc;
     DOMString? genre;
     DOMString? language;
     DOMString? title;
     long? track;
 
@@ skipping 93 matching lines @@
   interface Events {
     // Fired when a media gallery is changed or a gallery watch is dropped.
     static void onGalleryChanged(GalleryChangeDetails details);
 
     // The pending media scan has changed state. See details for more
     // information.
     [nodefine, deprecated="The mediaGalleries API no longer supports scanning."]
     static void onScanProgress(ScanProgressDetails details);
   };
 };