Record Screenshot_ShowInFolder UserAction

This UserAction is recorded from a user click on the body of a
screenshot notification.

Bug: 1126573
Change-Id: Ifcb2a3910e55b5019e641b24b4b4a64288361a50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401267Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: David Black <dmblack@google.com>
Cr-Commit-Position: refs/heads/master@{#805933}

chrome/browser/ui/ash/chrome_screenshot_grabber.cc

@@ -93,6 +93,7 @@ class ScreenshotGrabberNotificationDelegate
         platform_util::ShowItemInFolder(profile_, screenshot_path_);
         NotificationDisplayService::GetForProfile(profile_)->Close(
             NotificationHandler::Type::TRANSIENT, kNotificationId);
+        base::RecordAction(base::UserMetricsAction("Screenshot_ShowInFolder"));
       }
       return;
     }

tools/metrics/actions/actions.xml

@@ -20263,6 +20263,15 @@ should be able to be added at any place in this file.
   <description>Please enter the description of this user action.</description>
 </action>
 
+<action name="Screenshot_ShowInFolder">
+  <owner>xiyuan@chromium.org</owner>
+  <owner>gzadina@google.com</owner>
+  <description>
+    User clicks the body of the notification displayed after taking a screenshot
+    in order to show the screenshot file in its folder.
+  </description>
+</action>
+
 <action name="Screenshot_TakeFull">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>