Some filebrowser bugs and retiring DiskChanged event in filebrowser

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

Index: chrome/browser/resources/file_manager/js/file_manager.js
===================================================================
--- chrome/browser/resources/file_manager/js/file_manager.js	(revision 95171)
+++ chrome/browser/resources/file_manager/js/file_manager.js	(working copy)
@@ -1601,9 +1601,18 @@
           }
         }
       }
+
+      if (event.eventType == 'unmount' && event.status == 'success' &&
+          self.currentDirEntry_ &&
+          isParentPath(event.mountPath, self.currentDirEntry_.fullPath)) {
+        self.changeDirectory(getParentPath(event.mountPath));
+        return;
+      }
+
       // TODO(dgozman): rescan directory, only if it contains mounted points,
       // when mounts location will be decided.
-      this.rescanDirectory_();
+      if (event.status == 'success')
+        self.rescanDirectory_();
     });
   };
 
@@ -2258,15 +2267,6 @@
    * @param {string} path The path that has been mounted or unmounted.
    */
   FileManager.prototype.onDiskChanged_ = function(event) {
-    if (event.eventType == 'added') {
-      this.changeDirectory(event.volumeInfo.mountPath);
-    } else if (event.eventType == 'removed') {
-      if (this.currentDirEntry_ &&
-          isParentPath(event.volumeInfo.mountPath,
-                       this.currentDirEntry_.fullPath)) {
-        this.changeDirectory(getParentPath(event.volumeInfo.mountPath));
-      }
-    }
   };
 
   /**