scanning: Add Scan app to DefaultAppLaunch metrics

Adds Scan app to the list of essential apps being tracked.

Bug: 1059779
Change-Id: I4042ac0e6d8c46516b4456f50eb56264984546b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575424Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Gavin Williams <gavinwill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834732}

chrome/browser/apps/app_service/app_service_metrics.cc

@@ -25,6 +25,8 @@ namespace {
 // The default app's histogram name. This is used for logging so do
 // not change the order of this enum.
 // https://docs.google.com/document/d/1WJ-BjlVOM87ygIsdDBCyXxdKw3iS5EtNGm1fWiWhfIs
+// If you're adding to this enum with the intention that it will be logged,
+// update the DefaultAppName enum listing in tools/metrics/histograms/enums.xml.
 enum class DefaultAppName {
   kCalculator = 10,
   kText = 11,
@@ -58,10 +60,11 @@ enum class DefaultAppName {
   // This is our test SWA. It's only installed in tests.
   kMockSystemApp = 39,
   kStadia = 40,
+  kScanningApp = 41,
 
   // Add any new values above this one, and update kMaxValue to the highest
   // enumerator value.
-  kMaxValue = kStadia,
+  kMaxValue = kScanningApp,
 };
 
 void RecordDefaultAppLaunch(DefaultAppName default_app_name,
@@ -255,6 +258,10 @@ void RecordAppLaunch(const std::string& app_id,
     RecordDefaultAppLaunch(DefaultAppName::kYouTubeMusic, launch_source);
   else if (app_id == web_app::kStadiaAppId)
     RecordDefaultAppLaunch(DefaultAppName::kStadia, launch_source);
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+  else if (app_id == web_app::kScanningAppId)
+    RecordDefaultAppLaunch(DefaultAppName::kScanningApp, launch_source);
+#endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
   // Above are default apps; below are built-in apps.
 

chrome/browser/web_applications/components/web_app_id_constants.h

@@ -71,6 +71,9 @@ constexpr char kOsSettingsAppId[] = "odknhmnlageboeamepcngndbggdpaobj";
 //     "https://books.google.com/ebooks/app"))
 constexpr char kPlayBooksAppId[] = "jglfhlbohpgcbefmhdmpancnijacbbji";
 
+// Generated as: web_app::GenerateAppIdFromURL(GURL("chrome://scanning/"))
+constexpr char kScanningAppId[] = "cdkahakpgkdaoffdmfgnhgomkelkocfo";
+
 // Generated as: web_app::GenerateAppIdFromURL(GURL(
 //     "chrome://settings/"))
 constexpr char kSettingsAppId[] = "inogagmajamaleonmanpkpkkigmklfad";

tools/metrics/histograms/enums.xml

@@ -16418,6 +16418,7 @@ metrics consent we also won't be able to send UMA metrics. -->
   <int value="37" label="YouTube"/>
   <int value="38" label="YouTube Music"/>
   <int value="40" label="Stadia"/>
+  <int value="41" label="ScanningApp"/>
 </enum>
 
 <enum name="DefaultBrowserAsyncAttemptResult">