Add a use counter for notification show triggers

Change-Id: Ibd1f7b117e6b466deebad5795548b4a67958ec89
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1784609
Commit-Queue: Peter Beverloo <peter@chromium.org>
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Auto-Submit: Peter Beverloo <peter@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693209}

third_party/blink/public/mojom/web_feature/web_feature.mojom

@@ -2397,6 +2397,7 @@ enum WebFeature {
   kFetchCacheReload = 3014,
   kV8Window_ChooseFileSystemEntries_Method = 3015,
   kV8FileSystemDirectoryHandle_GetSystemDirectory_Method = 3016,
+  kNotificationShowTrigger = 3017,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.

third_party/blink/renderer/modules/notifications/notification_data.cc

@@ -13,6 +13,7 @@
 #include "third_party/blink/renderer/modules/notifications/timestamp_trigger.h"
 #include "third_party/blink/renderer/modules/vibration/vibration_controller.h"
 #include "third_party/blink/renderer/platform/bindings/exception_state.h"
+#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
 #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
 #include "third_party/blink/renderer/platform/wtf/text/string_view.h"
 
@@ -142,6 +143,8 @@ mojom::blink::NotificationDataPtr CreateNotificationData(
   notification_data->actions = std::move(actions);
 
   if (options->hasShowTrigger()) {
+    UseCounter::Count(context, WebFeature::kNotificationShowTrigger);
+
     auto* timestamp_trigger = options->showTrigger();
     auto timestamp = base::Time::FromJsTime(timestamp_trigger->timestamp());
 

tools/metrics/histograms/enums.xml

@@ -24559,6 +24559,7 @@ Called by update_net_error_codes.py.-->
   <int value="3015" label="V8Window_ChooseFileSystemEntries_Method"/>
   <int value="3016"
       label="V8FileSystemDirectoryHandle_GetSystemDirectory_Method"/>
+  <int value="3017" label="NotificationShowTrigger"/>
 </enum>
 
 <enum name="FeaturePolicyAllowlistType">