Add a chrome://flags entry for the Answers in Suggest experiment.

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 f4368dfe53b5c46ef6090661ffca6d5f669bb1c9..24ca9b522eb9d79bb9d9c4782c06791e50bee102 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1828,6 +1828,15 @@ const Experiment kExperiments[] = {
     kOsDesktop,
     SINGLE_VALUE_TYPE(switches::kEnableHarfBuzzRenderText)
   },
+#if defined(OS_ANDROID)
+  {
+    "enable-answers-in-suggest",
+    IDS_FLAGS_ENABLE_ANSWERS_IN_SUGGEST_NAME,
+    IDS_FLAGS_ENABLE_ANSWERS_IN_SUGGEST_DESCRIPTION,
+    kOsAndroid,
+    SINGLE_VALUE_TYPE(switches::kEnableAnswersInSuggest)
+  },
+#endif
 };
 
 const Experiment* experiments = kExperiments;