Add script files of the separated Gallery.app.

chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js

Index: chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
diff --git a/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js b/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
index b86fb357d3e1197dcd57e10a4cc1ebc023302d27..47ded8dc73c1d066bbf8e9596b62c15d26689a9b 100644
--- a/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
+++ b/chrome/browser/resources/file_manager/foreground/js/metadata/metadata_cache.js
@@ -875,15 +875,11 @@ function ContentProvider() {
   this.urlFilter_ = /.*/;
 
   var path = document.location.pathname;
-  var workerPath = document.location.origin +
-      path.substring(0, path.lastIndexOf('/') + 1) +
-      'foreground/js/metadata/metadata_dispatcher.js';
-
-  this.dispatcher_ = new SharedWorker(workerPath).port;
-  this.dispatcher_.start();
-
-  this.dispatcher_.onmessage = this.onMessage_.bind(this);
-  this.dispatcher_.postMessage({verb: 'init'});
+  var dispatcher = new SharedWorker(ContentProvider.WORKER_SCRIPT).port;
+  dispatcher.start();

[yoshiki, 2014/04/23 07:08:39]

I think, it's better to put start() after adding message handler.

[hirono, 2014/04/23 08:13:15]

Done.

+  dispatcher.onmessage = this.onMessage_.bind(this);
+  dispatcher.postMessage({verb: 'init'});
+  this.dispatcher_ = dispatcher;
 
   // Initialization is not complete until the Worker sends back the
   // 'initialized' message.  See below.
@@ -894,6 +890,14 @@ function ContentProvider() {
   this.callbacks_ = {};
 }
 
+/**
+ * Path of a worker script.
+ * @type {string}

[yoshiki, 2014/04/23 07:08:39]

@const

[hirono, 2014/04/23 08:13:15]

Done.

+ */
+ContentProvider.WORKER_SCRIPT =
+    'chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj/' +
+    'foreground/js/metadata_dispatcher.js';
+
 ContentProvider.prototype = {
   __proto__: MetadataProvider.prototype
 };