Map WebDXFeature use counters for Fugu

This CL maps existing counters that are representative of the feature
usage:
- app-file-handlers: WebDXFeatures::kAppFileHandlers is recorded when
launch files are set in the web_launch_service_impl.cc

- app-protocol-handlers: WebDXFeatures::kAppProtocolHandlers is
recorded if the manifest's protocol handler is not empty. Found in the
manifest_manager.cc

- badging: WebDXFeatures::kBadging is recorded when installed web
applications display an application badge. This feature is used in
navigator_badge.cc when setAppBadge() is called.

- manifest: WebDXFeatures::kManifest is recorded when any manifest
metadata about a site is collected. Aside from the name, icon, and
descriptions, this also includes ways in which the app wishes to
integrate with the device.
More info:
https://github.com/web-platform-dx/web
features/blob/main/features/manifest.yml

- beforeInstallPrompt: WebDXFeatures::kBeforeInstallPrompt is
recorded when an event prompt shows up and is completed for a
site that is installable as a PWA.

Change-Id: I069ac1eb8abc2b71ddb800c44b05cc56f218cdae
Bug: 379953791
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6299834
Commit-Queue: May Siem <msiem@chromium.org>
Reviewed-by: Dibyajyoti Pal <dibyapal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1424277}

components/page_load_metrics/browser/observers/use_counter/webdx_feature_maps.cc

@@ -348,6 +348,33 @@ UseCounterMetricsRecorder::GetWebFeatureToWebDXFeatureMap() {
           {WebFeature::kScrollMarkerPseudoElement,
            WebDXFeature::kScrollMarkers},
           {WebFeature::kPopoverTypeHint, WebDXFeature::kDRAFT_PopoverHint},
+          {WebFeature::kFileHandlingLaunch, WebDXFeature::kAppFileHandlers},
+          {WebFeature::kWebAppManifestProtocolHandlers,
+           WebDXFeature::kAppProtocolHandlers},
+          {WebFeature::kBadgeSetWithoutNotificationPermissionInBrowserWindow,
+           WebDXFeature::kBadging},
+          {WebFeature::kBadgeSetWithoutNotificationPermissionInAppWindow,
+           WebDXFeature::kBadging},
+          {WebFeature::kBadgeSetWithoutNotificationPermissionInWorker,
+           WebDXFeature::kBadging},
+          {WebFeature::kWebAppManifestCaptureLinks, WebDXFeature::kManifest},
+          {WebFeature::kWebAppManifestHasComments, WebDXFeature::kManifest},
+          {WebFeature::kWebAppManifestLaunchHandler, WebDXFeature::kManifest},
+          {WebFeature::kWebAppManifestScopeExtensions, WebDXFeature::kManifest},
+          {WebFeature::kWebAppManifestIdField, WebDXFeature::kManifest},
+          {WebFeature::kWebAppWindowControlsOverlay, WebDXFeature::kManifest},
+          {WebFeature::kWebAppBorderless, WebDXFeature::kManifest},
+          {WebFeature::kWebAppTabbed, WebDXFeature::kManifest},
+          {WebFeature::kBeforeInstallPromptEvent,
+           WebDXFeature::kBeforeInstallPrompt},
+          {WebFeature::kBeforeInstallPromptEventUserChoice,
+           WebDXFeature::kBeforeInstallPrompt},
+          {WebFeature::kBeforeInstallPromptEventPreventDefault,
+           WebDXFeature::kBeforeInstallPrompt},
+          {WebFeature::kBeforeInstallPromptEventPrompt,
+           WebDXFeature::kBeforeInstallPrompt},
+          {WebFeature::kV8BeforeInstallPromptEvent_Platforms_AttributeGetter,
+           WebDXFeature::kBeforeInstallPrompt},
       }};
 
   return *kMap;

third_party/blink/public/mojom/use_counter/metrics/webdx_feature.mojom

@@ -354,6 +354,11 @@ enum WebDXFeature {
   kDRAFT_PopoverHint = 296,
   kDRAFT_RegExpEscape = 297,
   kFloat16array = 298,
+  kAppFileHandlers = 299,
+  kAppProtocolHandlers = 300,
+  kBadging = 301,
+  kManifest = 302,
+  kBeforeInstallPrompt = 303,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.

tools/metrics/histograms/metadata/blink/enums.xml

@@ -7853,6 +7853,11 @@ Called by update_use_counter_feature_enum.py.-->
   <int value="296" label="DRAFT_PopoverHint"/>
   <int value="297" label="DRAFT_RegExpEscape"/>
   <int value="298" label="Float16array"/>
+  <int value="299" label="AppFileHandlers"/>
+  <int value="300" label="AppProtocolHandlers"/>
+  <int value="301" label="Badging"/>
+  <int value="302" label="Manifest"/>
+  <int value="303" label="BeforeInstallPrompt"/>
 </enum>
 
 <!-- LINT.ThenChange(//third_party/blink/public/mojom/use_counter/metrics/webdx_feature.mojom:WebDXFeature) -->