for mozilla-mobile#11830 added new metric for collecting startup method

app/metrics.yaml

@@ -8,6 +8,23 @@ no_lint:
   - CATEGORY_GENERIC
 
 events:
+  app_opened_all_startup:
+    type: event
+    description: |
+      A user opened the app from any one of the following flow
+      hot, warm or cold start to the homescreen.
+    extra_keys:
+      source:
+        description: |
+          The method used to open Fenix. Possible values are `app_icon`,
+          `custom_tab` or `link`
+    bugs:
+      - https://github.com/mozilla-mobile/fenix/issues/11830
+    data_reviews:
+      - NA
+    notification_emails:
+      - [email protected]
+    expires: "2020-12-01"
   app_opened:
     type: event
     description: |

docs/metrics.md

@@ -96,6 +96,7 @@ The following metrics are added to the ping:
 | download_notification.try_again |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user tapped on try again when a download fails in the download notification  |[1](https://github.com/mozilla-mobile/fenix/pull/6554)||2020-09-01 |
 | error_page.visited_error |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user encountered an error page  |[1](https://github.com/mozilla-mobile/fenix/pull/2491#issuecomment-492414486)|<ul><li>error_type: The error type of the error page encountered</li></ul>|2020-09-01 |
 | events.app_opened |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened the app (from cold start, to the homescreen or browser)  |[1](https://github.com/mozilla-mobile/fenix/pull/1067#issuecomment-474598673)|<ul><li>source: The method used to open Fenix. Possible values are: `app_icon`, `custom_tab` or `link` </li></ul>|2020-09-01 |
+| events.app_opened_all_startup |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened the app from any one of the following flow hot, warm or cold start to the homescreen.  |[1](NA)|<ul><li>source: The method used to open Fenix. Possible values are `app_icon`, `custom_tab` or `link` </li></ul>|2020-12-01 |
 | events.browser_menu_action |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A browser menu item was tapped  |[1](https://github.com/mozilla-mobile/fenix/pull/1214#issue-264756708), [2](https://github.com/mozilla-mobile/fenix/pull/5098#issuecomment-529658996), [3](https://github.com/mozilla-mobile/fenix/pull/6310)|<ul><li>item: A string containing the name of the item the user tapped. These items include:    Settings, Help, Desktop Site toggle on/off, Find in Page,   New Tab, Private Tab, Share, Report Site Issue, Back/Forward button,   Reload Button, Quit, Reader Mode On, Reader Mode Off, Open In app,   Add To Top Sites, Add-ons Manager, Bookmarks, History </li></ul>|2020-09-01 |
 | events.entered_url |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user entered a url  |[1](https://github.com/mozilla-mobile/fenix/pull/1067#issuecomment-474598673)|<ul><li>autocomplete: A boolean that tells us whether the URL was autofilled by an Autocomplete suggestion </li></ul>|2020-09-01 |
 | events.opened_link |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened a link with Fenix  |[1](https://github.com/mozilla-mobile/fenix/pull/5975)|<ul><li>mode: The mode the link was opened in. Either 'PRIVATE' or 'NORMAL'. </li></ul>|2020-09-01 |