Add Camera App HaTS Survey config

This CL adds the feature and preferences for the camera app HaTS survey.
The trigger logic and the config to control the feature via Finch will
be added in follow-up CLs separately.

Design Doc: go/cros-camera:dd:cca-hats

Bug: b:237737023
Test: Manually tested with follow-up CLs
Change-Id: I29d750b4a3b14c00e7ee97f132a19bcaf01dfa2a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3774290
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Commit-Queue: Wei Lee <wtlee@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1035002}

chrome/browser/ash/hats/hats_config.cc

@@ -157,4 +157,14 @@ const HatsConfig kHatsMediaAppPdfSurvey = {
     prefs::kHatsMediaAppPdfCycleEndTs,  // hatsCycleEndTimestampPrefName
 };
 
+// Camera App Survey -- shown after an user captured a photo/video or left the
+// app with session > 15 seconds.
+const HatsConfig kHatsCameraAppSurvey = {
+    ::features::kHappinessTrackingSystemCameraApp,  // feature
+    "Browser.ChromeOS.HatsSatisfaction.CameraApp",  // histogram_name
+    base::Days(90),                                 // new_device_threshold
+    prefs::kHatsCameraAppDeviceIsSelected,          // is_selected_pref_name
+    prefs::kHatsCameraAppSurveyCycleEndTs,  // cycle_end_timestamp_pref_name
+};
+
 }  // namespace ash

chrome/browser/ash/hats/hats_config.h

@@ -57,6 +57,7 @@ extern const HatsConfig kHatsPersonalizationAvatarSurvey;
 extern const HatsConfig kHatsPersonalizationScreensaverSurvey;
 extern const HatsConfig kHatsPersonalizationWallpaperSurvey;
 extern const HatsConfig kHatsMediaAppPdfSurvey;
+extern const HatsConfig kHatsCameraAppSurvey;
 
 }  // namespace ash
 

chrome/browser/ash/preferences.cc

@@ -442,6 +442,10 @@ void Preferences::RegisterProfilePrefs(
   registry->RegisterBooleanPref(::prefs::kHatsPerformanceDeviceIsSelected,
                                 false);
 
+  registry->RegisterInt64Pref(::prefs::kHatsCameraAppSurveyCycleEndTs, 0);
+
+  registry->RegisterBooleanPref(::prefs::kHatsCameraAppDeviceIsSelected, false);
+
   // Personalization HaTS survey prefs for avatar, screensaver, and wallpaper
   // features.
   registry->RegisterInt64Pref(

chrome/common/chrome_features.cc

@@ -547,6 +547,9 @@ const base::Feature kHappinessTrackingPersonalizationWallpaper{
 // Enables the Happiness Tracking System for Media App PDF survey.
 const base::Feature kHappinessTrackingMediaAppPdf{
     "HappinessTrackingMediaAppPdf", base::FEATURE_DISABLED_BY_DEFAULT};
+// Enables or disables the Happiness Tracking System for Camera App survey.
+const base::Feature kHappinessTrackingSystemCameraApp{
+    "HappinessTrackingCameraApp", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 // Hides the origin text from showing up briefly in WebApp windows.

chrome/common/chrome_features.h

@@ -386,6 +386,9 @@ extern const base::Feature kHappinessTrackingPersonalizationWallpaper;
 COMPONENT_EXPORT(CHROME_FEATURES)
 extern const base::Feature kHappinessTrackingMediaAppPdf;
 
+COMPONENT_EXPORT(CHROME_FEATURES)
+extern const base::Feature kHappinessTrackingSystemCameraApp;
+
 #endif
 
 COMPONENT_EXPORT(CHROME_FEATURES)

chrome/common/pref_names.cc

@@ -879,6 +879,16 @@ const char kHatsMediaAppPdfCycleEndTs[] =
 // survey.
 const char kHatsMediaAppPdfIsSelected[] = "hats_media_app_pdf_is_selected";
 
+// An int64 pref. This is the timestamp, microseconds after epoch, that
+// indicates the end of the most recent Camera App survey cycle.
+const char kHatsCameraAppSurveyCycleEndTs[] =
+    "hats_camera_app_cycle_end_timestamp";
+
+// A boolean pref. Indicates if the device is selected for the Camera App
+// survey.
+const char kHatsCameraAppDeviceIsSelected[] =
+    "hats_camera_app_device_is_selected";
+
 // A boolean pref. Indicates if we've already shown a notification to inform the
 // current user about the quick unlock feature.
 const char kPinUnlockFeatureNotificationShown[] =

chrome/common/pref_names.h

@@ -304,6 +304,8 @@ extern const char kHatsPersonalizationWallpaperSurveyCycleEndTs[];
 extern const char kHatsPersonalizationWallpaperSurveyIsSelected[];
 extern const char kHatsMediaAppPdfCycleEndTs[];
 extern const char kHatsMediaAppPdfIsSelected[];
+extern const char kHatsCameraAppDeviceIsSelected[];
+extern const char kHatsCameraAppSurveyCycleEndTs[];
 extern const char kEolStatus[];
 extern const char kEndOfLifeDate[];
 extern const char kEolNotificationDismissed[];

tools/metrics/histograms/metadata/browser/histograms.xml

@@ -97,6 +97,7 @@ chromium-metrics-reviews@google.com.
   <token key="Survey">
     <variant name=".ArcGames"/>
     <variant name=".Audio"/>
+    <variant name=".CameraApp"/>
     <variant name=".Ent"/>
     <variant name=".General"/>
     <variant name=".MediaAppPdf"/>