Fix all compiler errors found by the new compiler version.

ui/file_manager/image_loader/cache_unittest.js

Index: ui/file_manager/image_loader/cache_unittest.js
diff --git a/ui/file_manager/image_loader/cache_unittest.js b/ui/file_manager/image_loader/cache_unittest.js
index 1db4c4831dd6ff46efdb940b6ea0d62c7bc345f2..5a54ebc58269ffdf338f73a1713f53a049c43ecf 100644
--- a/ui/file_manager/image_loader/cache_unittest.js
+++ b/ui/file_manager/image_loader/cache_unittest.js
@@ -5,14 +5,14 @@
 'use strict';
 
 function testCreateCacheKey() {
-  var key = Cache.createKey({url: 'http://example.com/image.jpg'});
+  var key = ImageCache.createKey({url: 'http://example.com/image.jpg'});
   assertTrue(!!key);
 }
 
 function testNotCreateCacheKey() {
-  var key = Cache.createKey({url: 'data:xxx'});
+  var key = ImageCache.createKey({url: 'data:xxx'});
   assertFalse(!!key);
 
-  var key = Cache.createKey({url: 'DaTa:xxx'});
+  var key = ImageCache.createKey({url: 'DaTa:xxx'});
   assertFalse(!!key);
 }