Postpone automatic popup of cloud backup details until ready to backup.

ui/file_manager/file_manager/foreground/js/import_controller.js

Index: ui/file_manager/file_manager/foreground/js/import_controller.js
diff --git a/ui/file_manager/file_manager/foreground/js/import_controller.js b/ui/file_manager/file_manager/foreground/js/import_controller.js
index 343b1d2f33cd274ce04032488a00eb1e19c7e83d..a217242890392d25874cde149bac5da6085383de 100644
--- a/ui/file_manager/file_manager/foreground/js/import_controller.js
+++ b/ui/file_manager/file_manager/foreground/js/import_controller.js
@@ -71,6 +71,13 @@ importer.ImportController =
    */
   this.lastActivityState_ = importer.ActivityState.HIDDEN;
 
+  /**
+   * Whether the window was opened by plugging a media device and user hadn't
+   * navigated to other directories.
+   * @private {boolean}
+   */
+  this.isRightAfterPluggingMedia_ = false;
+
   var listener = this.onScanEvent_.bind(this);
   this.scanner_.addObserver(listener);
   // Remove the observer when the foreground window is closed.
@@ -163,11 +170,7 @@ importer.ImportController.prototype.onVolumeUnmounted_ = function(volumeId) {
  * @private
  */
 importer.ImportController.prototype.onDirectoryChanged_ = function(event) {
-  if (!event.previousDirEntry &&
-      event.newDirEntry &&
-      importer.isMediaDirectory(event.newDirEntry, this.environment_)) {
-    this.commandWidget_.setDetailsVisible(true);
-  }
+  this.isRightAfterPluggingMedia_ = !event.previousDirEntry;
 
   this.scanManager_.reset();
   if (this.isCurrentDirectoryScannable_()) {
@@ -390,6 +393,10 @@ importer.ImportController.prototype.checkState_ = function(opt_scan) {
         this.updateUi_(
             importer.ActivityState.READY,  // to import...
             opt_scan);
+        if (this.isRightAfterPluggingMedia_) {
+          this.isRightAfterPluggingMedia_ = false;
+          this.commandWidget_.setDetailsVisible(true);
+        }
       }.bind(this))
       .catch(importer.getLogger().catcher('import-controller-check-state'));
 };