filemanager: Show Drive related gear menu for the sidebar "Shared with me", "Recent", "Offline".

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

Index: chrome/browser/resources/file_manager/js/file_manager.js
diff --git a/chrome/browser/resources/file_manager/js/file_manager.js b/chrome/browser/resources/file_manager/js/file_manager.js
index ad05600384f6dd568a15d406330a1d5b24abb52a..a76c0c89d93f8b070230c506d8ab59431850db67 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -1664,8 +1664,11 @@ DialogType.isModal = function(type) {
    *     Drive.
    */
   FileManager.prototype.isOnDrive = function() {
-    return this.directoryModel_.getCurrentRootType() === RootType.DRIVE ||
-           this.directoryModel_.getCurrentRootType() === RootType.DRIVE_OFFLINE;
+    var rootType = this.directoryModel_.getCurrentRootType();
+    return rootType === RootType.DRIVE ||
+           rootType === RootType.DRIVE_SHARED_WITH_ME ||
+           rootType === RootType.DRIVE_RECENT ||
+           rootType === RootType.DRIVE_OFFLINE;
   };
 
   /**
@@ -2092,10 +2095,11 @@ DialogType.isModal = function(type) {
    * @private
    */
   FileManager.prototype.updateGearMenu_ = function() {
-    this.syncButton.hidden = !this.isOnDrive();
-    this.hostedButton.hidden = !this.isOnDrive();
+    var hideItemsForDrive = !this.isOnDrive();
+    this.syncButton.hidden = hideItemsForDrive;
+    this.hostedButton.hidden = hideItemsForDrive;
     this.document_.getElementById('drive-separator').hidden =
-        !this.isOnDrive();
+        hideItemsForDrive;
 
     // If volume has changed, then fetch remaining space data.
     if (this.previousRootUrl_ != this.directoryModel_.getCurrentMountPointUrl())