Change the meaning of SelectFileDialog.support_drive: it means Drive-aware callers.

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 42653869d05ab561f9ddda424e4e0f277c5bedc2..f881e78e42a018f4737ba0416f3fa804bbbe426d 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -2010,11 +2010,16 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
   };
 
   FileManager.prototype.isDriveEnabled = function() {
-    // TODO(kinaba): Remove the "!shouldReturnLocalPath &&" condition once
-    // crbug.com/140425 is done.
-    return !this.params_.shouldReturnLocalPath &&
-        (!('driveEnabled' in this.preferences_) ||
-         this.preferences_.driveEnabled);
+    // Auto resolving to local path does not work for folders (e.g., dialog for
+    // loading unpacked extensions) and saving.
+    // TODO(kinaba): make it work for the save dialog http://crbug.com/140425
+    var noLocalPathResolution =
+      this.params_.type == DialogType.SELECT_SAVEAS_FILE ||
+      this.params_.type == DialogType.SELECT_FOLDER ||
+      this.params_.type == DialogType.SELECT_UPLOAD_FOLDER;
+    if (noLocalPathResolution && this.params_.shouldReturnLocalPath)
+      return false;
+    return this.preferences_.driveEnabled;
   };
 
   FileManager.prototype.isOnReadonlyDirectory = function() {