Fixed links in the Files.app's gear menu.

chrome/browser/resources/file_manager/js/file_manager_commands.js

Index: chrome/browser/resources/file_manager/js/file_manager_commands.js
diff --git a/chrome/browser/resources/file_manager/js/file_manager_commands.js b/chrome/browser/resources/file_manager/js/file_manager_commands.js
index 06297ead7ddd2c51ed9c6147fb5cc4679bd06c64..a7ad15fc22d8cb6e035a7676e796c42c91c38a7d 100644
--- a/chrome/browser/resources/file_manager/js/file_manager_commands.js
+++ b/chrome/browser/resources/file_manager/js/file_manager_commands.js
@@ -317,9 +317,9 @@ Commands.renameFileCommand = {
 Commands.volumeHelpCommand = {
   execute: function() {
     if (fileManager.isOnDrive())
-      window.open(FileManager.GOOGLE_DRIVE_HELP, 'help');
+      chrome.tabs.create({ url: FileManager.GOOGLE_DRIVE_HELP });
     else
-      window.open(FileManager.FILES_APP_HELP, 'help');
+      chrome.tabs.create({ url: FileManager.FILES_APP_HELP });
   },
   canExecute: function(event, fileManager) {
     event.canExecute = true;
@@ -331,7 +331,7 @@ Commands.volumeHelpCommand = {
  */
 Commands.driveBuySpaceCommand = {
   execute: function() {
-    window.open(FileManager.GOOGLE_DRIVE_BUY_STORAGE, 'buy-more-space');
+    chrome.tabs.create({ url: FileManager.GOOGLE_DRIVE_BUY_STORAGE });
   },
   canExecute: CommandUtil.canExecuteVisibleOnDriveOnly
 };
@@ -361,7 +361,7 @@ Commands.driveReloadCommand = {
  */
 Commands.driveGoToDriveCommand = {
   execute: function() {
-    window.open(FileManager.GOOGLE_DRIVE_ROOT, 'drive-root');
+    chrome.tabs.create({ url: FileManager.GOOGLE_DRIVE_ROOT });
   },
   canExecute: CommandUtil.canExecuteVisibleOnDriveOnly
 };