Add DelayNavigationThrottle

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 52bea44952d5d5d1791b5a14182fc2e6f8bc194c..b3053a69232082c415dc1f7ab3e23d7b6a73405b 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -27,6 +27,7 @@
 #include "build/build_config.h"
 #include "cc/base/switches.h"
 #include "chrome/browser/ntp_snippets/ntp_snippets_features.h"
+#include "chrome/browser/page_load_metrics/experiments/delay_navigation_throttle.h"
 #include "chrome/browser/predictors/resource_prefetch_common.h"
 #include "chrome/browser/prerender/prerender_field_trial.h"
 #include "chrome/common/channel_info.h"
@@ -756,6 +757,27 @@ const FeatureEntry::FeatureVariation
          arraysize(kAutofillCreditCardLastUsedDateFeatureVariationExpDate),
          nullptr}};
 
+const FeatureEntry::FeatureParam kDelayNavigation5SecondDelay[] = {
+    {DelayNavigationThrottle::kParamDelayNavigationDurationMillis, "5000"},
+    {DelayNavigationThrottle::kParamDelayNavigationProbability, "1"}};
+
+const FeatureEntry::FeatureParam kDelayNavigation5SecondDelay25Percent[] = {
+    {DelayNavigationThrottle::kParamDelayNavigationDurationMillis, "5000"},
+    {DelayNavigationThrottle::kParamDelayNavigationProbability, "0.25"}};
+
+const FeatureEntry::FeatureParam kDelayNavigation5SecondDelayRandomize[] = {
+    {DelayNavigationThrottle::kParamDelayNavigationDurationMillis, "5000"},
+    {DelayNavigationThrottle::kParamDelayNavigationProbability, "1"},
+    {DelayNavigationThrottle::kParamDelayNavigationRandomize, "true"}};
+
+const FeatureEntry::FeatureVariation kDelayNavigationFeatureVariations[] = {
+    {"(5 second delay, 100% probability)", kDelayNavigation5SecondDelay,
+     arraysize(kDelayNavigation5SecondDelay), nullptr},
+    {"(5 second delay, 25% probability)", kDelayNavigation5SecondDelay25Percent,
+     arraysize(kDelayNavigation5SecondDelay25Percent), nullptr},
+    {"(0-5 second randomized delay)", kDelayNavigation5SecondDelayRandomize,
+     arraysize(kDelayNavigation5SecondDelayRandomize), nullptr}};
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the entry is the internal name.
@@ -2397,6 +2419,12 @@ const FeatureEntry kFeatureEntries[] = {
      FEATURE_VALUE_TYPE(chrome::android::kUseNewDoodleApi)},
 #endif  // OS_ANDROID
 
+    {"delay-navigation", IDS_FLAGS_DELAY_NAVIGATION_NAME,
+     IDS_FLAGS_DELAY_NAVIGATION_DESCRIPTION, kOsAll,
+     FEATURE_WITH_PARAMS_VALUE_TYPE(kDelayNavigationFeature,
+                                    kDelayNavigationFeatureVariations,
+                                    "DelayNavigation")},
+
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.