Quick View UMA: export how quick view was opened.

ui/file_manager/file_manager/foreground/js/quick_view_controller.js

Index: ui/file_manager/file_manager/foreground/js/quick_view_controller.js
diff --git a/ui/file_manager/file_manager/foreground/js/quick_view_controller.js b/ui/file_manager/file_manager/foreground/js/quick_view_controller.js
index c651a9e0dc9b05b1db065f9eddc97682245bae93..d5c312f8ef77ad8243ddf49e898ea3ba76f49d04 100644
--- a/ui/file_manager/file_manager/foreground/js/quick_view_controller.js
+++ b/ui/file_manager/file_manager/foreground/js/quick_view_controller.js
@@ -76,7 +76,7 @@ function QuickViewController(
       'keydown', this.onKeyDownToOpen_.bind(this));
   listContainer.element.addEventListener('command', function(event) {
     if(event.command.id === 'get-info')
-      this.display_();
+      this.display_(QuickViewUma.WayToOpen.CONTEXT_MENU);
   }.bind(this));
   quickView.addEventListener('keydown', this.onQuickViewKeyDown_.bind(this));
   quickView.addEventListener('iron-overlay-closed', function() {
@@ -111,7 +111,7 @@ QuickViewController.prototype.onKeyDownToOpen_ = function(event) {
     return;
   if (event.key === ' ') {
     event.preventDefault();
-    this.display_();
+    this.display_(QuickViewUma.WayToOpen.SPACE_KEY);
   }
 };
 
@@ -147,14 +147,16 @@ QuickViewController.prototype.onQuickViewKeyDown_ = function(event) {
 
 /**
  * Display quick view.
+ * @param {QuickViewUma.WayToOpen=} wayToOpen in which way opening of

[fukino, 2017/01/12 03:46:01]

If this is an optional parameter, it should be opt_wayToOpen. (But I guess it is
not optional?)

[oka, 2017/01/12 04:14:02]

This is actually optional. It doesn't have to be provided if caller is sure that
Quick View is already open (L176). Added opt_ prefix.

+ *     quick view was triggered. Can be omitted if quick view is already open.
  *
  * @private
  */
-QuickViewController.prototype.display_ = function() {
+QuickViewController.prototype.display_ = function(wayToOpen) {
   this.updateQuickView_().then(function() {
     if (!this.quickView_.isOpened()) {
       this.quickView_.open();
-      this.quickViewUma_.onOpened(this.entries_[0]);
+      this.quickViewUma_.onOpened(this.entries_[0], assert(wayToOpen));
     }
   }.bind(this));
 };