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

chrome/test/data/extensions/api_test/media_galleries/read_access/test.js

 // 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.
 
 var mediaGalleries = chrome.mediaGalleries;
 var expectedGalleryEntryLength;
 
 function TestFirstFilesystem(verifyFilesystem) {
   function getMediaFileSystemsList() {
     mediaGalleries.getMediaFileSystems(getMediaFileSystemsCallback);
@@ skipping 24 matching lines @@
 
 function ReadFileToBytesTest() {
   function verifyFilesystem(filesystem) {
     verifyJPEG(filesystem.root, "test.jpg", expectedGalleryEntryLength,
                chrome.test.succeed);
   }
 
   TestFirstFilesystem(verifyFilesystem);
 }
 
+function GetMetadataTest() {
+  function verifyFilesystem(filesystem) {
+    filesystem.root.getFile("test.jpg", {create: false}, verifyFileEntry,
+      chrome.test.fail);
+  }
+
+  function verifyFileEntry(fileEntry) {
+    fileEntry.file(verifyFile, chrome.test.fail)
+  }
+
+  function verifyFile(file) {
+    mediaGalleries.getMetadata(file, {}, verifyMetadata);
+  }
+
+  function verifyMetadata(metadata) {
+    chrome.test.assertEq("image/jpeg", metadata.mimeType);
+    chrome.test.succeed();
+  }
+
+  TestFirstFilesystem(verifyFilesystem);
+}
+
 function GetMediaFileSystemMetadataTest() {
   function verifyFilesystem(filesystem) {
     var metadata = mediaGalleries.getMediaFileSystemMetadata(filesystem);
     checkMetadata(metadata);
     chrome.test.succeed();
   }
 
   TestFirstFilesystem(verifyFilesystem);
 }
 
 CreateDummyWindowToPreventSleep();
 
 chrome.test.getConfig(function(config) {
   customArg = JSON.parse(config.customArg);
   expectedGalleryEntryLength = customArg[0];
 
   chrome.test.runTests([
     ReadDirectoryTest,
     ReadFileToBytesTest,
+    GetMetadataTest,
     GetMediaFileSystemMetadataTest,
   ]);
 })