Removed a context menu from Files.app's left nav, since it became redundant.

chrome/browser/resources/file_manager/js/file_manager.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.
 
 // This variable is checked in SelectFileDialogExtensionBrowserTest.
 var JSErrorCount = 0;
 
 /**
  * Count uncaught exceptions.
  */
@@ skipping 518 matching lines @@
     cr.ui.contextMenuHandler.setContextMenu(this.table_.querySelector('.list'),
         this.fileContextMenu_);
     cr.ui.contextMenuHandler.setContextMenu(
         this.document_.querySelector('.drive-welcome.page'),
         this.fileContextMenu_);
 
     this.rootsContextMenu_ =
         this.dialogDom_.querySelector('#roots-context-menu');
     cr.ui.Menu.decorate(this.rootsContextMenu_);
 
-    this.downloadsRootContextMenu_ =
-        this.dialogDom_.querySelector('#downloads-root-context-menu');
-    cr.ui.Menu.decorate(this.downloadsRootContextMenu_);
-
     this.textContextMenu_ =
         this.dialogDom_.querySelector('#text-context-menu');
     cr.ui.Menu.decorate(this.textContextMenu_);
 
     this.gearButton_ = this.dialogDom_.querySelector('#gear-button');
     this.gearButton_.addEventListener('menushow',
         this.refreshRemainingSpace_.bind(this,
                                          false /* Without loading caption. */));
     cr.ui.decorate(this.gearButton_, cr.ui.MenuButton);
 
@@ skipping 47 matching lines @@
 
     CommandUtil.registerCommand(doc, 'drive-clear-local-cache',
         Commands.driveClearCacheCommand, this);
 
     CommandUtil.registerCommand(doc, 'drive-reload',
         Commands.driveReloadCommand, this);
 
     CommandUtil.registerCommand(doc, 'drive-go-to-drive',
         Commands.driveGoToDriveCommand, this);
 
-    CommandUtil.registerCommand(doc, 'files-app-help',
-        Commands.filesAppHelpCommand, this);
-
     CommandUtil.registerCommand(doc, 'paste',
         Commands.pasteFileCommand, doc, this.fileTransferController_);
 
     CommandUtil.registerCommand(doc, 'open-with',
         Commands.openWithCommand, this);
 
     CommandUtil.registerCommand(doc, 'toggle-pinned',
         Commands.togglePinnedCommand, this);
 
     CommandUtil.registerCommand(doc, 'zip-selection',
@@ skipping 817 matching lines @@
         // the root before executing it.
         unmountCommand.canExecuteChange(li);
         unmountCommand.execute(li);
       }.bind(this));
       // Block other mouse handlers.
       eject.addEventListener('mouseup', function(e) { e.stopPropagation() });
       eject.addEventListener('mousedown', function(e) { e.stopPropagation() });
       li.appendChild(eject);
     }
 
-    // Add a context menu for the root. "Downloads" has a menu item showing the
-    // remaining space information.
-    if (rootType == RootType.DOWNLOADS) {
-      cr.ui.contextMenuHandler.setContextMenu(li,
-                                              this.downloadsRootContextMenu_);
-
-      var downloadsRootContextMenu = this.downloadsRootContextMenu_;
-      var downloadsSpaceInfoLabel =
-          this.dialogDom_.querySelector('#downloads-space-info-label');
-
-      var downloadsSpaceInnerBar =
-          this.dialogDom_.querySelector('#downloads-space-info-bar');
-      var downloadsSpaceOuterBar =
-          this.dialogDom_.querySelector('#downloads-space-info-bar').
-              parentNode;
-
-      if (this.downloadsRootContextMenuListener_) {
-        cr.ui.contextMenuHandler.removeEventListener(
-            'show', this.downloadsRootContextMenuListener_);
-      }
-      this.downloadsRootContextMenuListener_ = function(ev) {
-        // Check available space on opening the context menu for Downloads.
-        if (ev.element != li || ev.menu != downloadsRootContextMenu)
-          return;
-
-        downloadsSpaceInnerBar.setAttribute('pending', '');
-        spaceInfoLabel.textContent = strf('SPACE_AVAILABLE', sizeStr);
-
-        chrome.fileBrowserPrivate.getSizeStats(
-            util.makeFilesystemUrl(path),
-            function(sizeStats) {
-              updateSpaceInfo(sizeStats, downloadsSpaceInnerBar,
-                              downloadsSpaceInfoLabel, downloadsSpaceOuterBar);
-            });
-      };
-
-      cr.ui.contextMenuHandler.addEventListener(
-        'show', this.downloadsRootContextMenuListener_);
-    } else if (rootType != RootType.DRIVE) {
+    if (rootType != RootType.DRIVE && rootType != RootType.DOWNLOADS)
       cr.ui.contextMenuHandler.setContextMenu(li, this.rootsContextMenu_);
-    }
 
     cr.defineProperty(li, 'lead', cr.PropertyKind.BOOL_ATTR);
     cr.defineProperty(li, 'selected', cr.PropertyKind.BOOL_ATTR);
 
     return li;
   };
 
   /**
    * Unmounts device.
    * @param {string} path Path to a volume to unmount.
@@ skipping 1481 matching lines @@
     return this.directoryModel_.getFileList();
   };
 
   /**
    * @return {cr.ui.List} Current list object.
    */
   FileManager.prototype.getCurrentList = function() {
     return this.currentList_;
   };
 })();