[File Manager] Fix history state for GData folder navigation

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 e33233d18d07d514f65ca03bfebd0dde6e082d63..9dcc94457a4b40bd3f10c54f9c58d4e30c5154e6 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -3778,8 +3778,11 @@ FileManager.prototype = {
     // an object with 'path' and 'date' properties.
     this.lastLabelClick_ = null;
 
-    var dirEntry = event.newDirEntry;
-    this.updateLocation_(event.initial, dirEntry.fullPath);
+    // Sometimes we rescan the same directory (when mounting GData lazily first,
+    // then for real). Do not update the location then.
+    if (event.newDirEntry.fullPath != event.previousDirEntry.fullPath) {
+      this.updateLocation_(event.initial, event.newDirEntry.fullPath);
+    }
 
     this.checkFreeSpace_(this.getCurrentDirectory());