Compile file_manager and eliminate gyp v1 from Files App!

ui/file_manager/file_manager/foreground/js/file_manager.js

Index: ui/file_manager/file_manager/foreground/js/file_manager.js
diff --git a/ui/file_manager/file_manager/foreground/js/file_manager.js b/ui/file_manager/file_manager/foreground/js/file_manager.js
index c67227b7c6f7909ff3fb59cd8034cbe0d5dfd979..ccc06a43db8ef12949519632b155399dcd699a32 100644
--- a/ui/file_manager/file_manager/foreground/js/file_manager.js
+++ b/ui/file_manager/file_manager/foreground/js/file_manager.js
@@ -296,7 +296,7 @@ function FileManager() {
   this.backgroundPage_ = null;
 
   /**
-   * @type {FileBrowserBackgroundImpl}
+   * @type {FileBrowserBackgroundFull}
    * @private
    */
   this.fileBrowserBackground_ = null;
@@ -800,7 +800,7 @@ FileManager.prototype = /** @struct */ {
             this.backgroundPage_ =
                 /** @type {!BackgroundWindow} */ (opt_backgroundPage);
             this.fileBrowserBackground_ =
-                /** @type {!FileBrowserBackgroundImpl} */ (
+                /** @type {!FileBrowserBackgroundFull} */ (
                     this.backgroundPage_.background);
             this.fileBrowserBackground_.ready(function() {
               loadTimeData.data = this.fileBrowserBackground_.stringData;