Introduce chrome://flags/#network-prediction-options-for-service-worker

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 0ae1b1113486e1dfb31a990ea44a8415544cb36e..c2e45b667643595202071837807a5b0c9ae7365c 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -28,6 +28,7 @@
 #include "cc/base/switches.h"
 #include "chrome/browser/experiments/memory_ablation_experiment.h"
 #include "chrome/browser/flag_descriptions.h"
+#include "chrome/browser/net/prediction_options.h"
 #include "chrome/browser/predictors/resource_prefetch_common.h"
 #include "chrome/browser/prerender/prerender_field_trial.h"
 #include "chrome/common/channel_info.h"
@@ -813,6 +814,23 @@ const FeatureEntry::FeatureVariation
         {"Learning", kSpeculativeResourcePrefetchingLearning,
          arraysize(kSpeculativeResourcePrefetchingLearning), nullptr}};
 
+const FeatureEntry::Choice kNetworkPredictionOptionsForServiceWorkerChoices[] =
+    {
+        {flags_ui::kGenericExperimentChoiceDefault, "", ""},
+        {chrome_browser_net::kPreconnectOnly,
+         switches::kNetworkPredictionOptionsForServiceWorker,
+         chrome_browser_net::kPreconnectOnly},
+        {chrome_browser_net::kStartServiceWorkerAndPreconnect,
+         switches::kNetworkPredictionOptionsForServiceWorker,
+         chrome_browser_net::kStartServiceWorkerAndPreconnect},
+        {chrome_browser_net::kStartServiceWorkerAndDeferPreconnect,
+         switches::kNetworkPredictionOptionsForServiceWorker,
+         chrome_browser_net::kStartServiceWorkerAndDeferPreconnect},
+        {chrome_browser_net::kStartServiceWorkerOnly,
+         switches::kNetworkPredictionOptionsForServiceWorker,
+         chrome_browser_net::kStartServiceWorkerOnly},
+};
+
 #if defined(OS_CHROMEOS) || defined(OS_LINUX) || defined(OS_MACOSX) || \
     defined(OS_WIN)
 const FeatureEntry::FeatureParam kPauseBackgroundTabsMinimalEngagment[] = {
@@ -2850,6 +2868,12 @@ const FeatureEntry kFeatureEntries[] = {
          kSpeculativeResourcePrefetchingFeatureVariations,
          "SpeculativeResourcePrefetchingValidation")},
 
+    {"network-prediction-options-for-service-worker",
+     flag_descriptions::kNetworkPredictionOptionsForServiceWorkerName,
+     flag_descriptions::kNetworkPredictionOptionsForServiceWorkerDescription,
+     kOsAll,
+     MULTI_VALUE_TYPE(kNetworkPredictionOptionsForServiceWorkerChoices)},
+
     {"enable-off-main-thread-fetch", flag_descriptions::kOffMainThreadFetchName,
      flag_descriptions::kOffMainThreadFetchDescription, kOsAll,
      FEATURE_VALUE_TYPE(features::kOffMainThreadFetch)},