[Android History] Add a chrome://flags for the Android native history UI

chrome/browser/android/chrome_feature_list.cc

Index: chrome/browser/android/chrome_feature_list.cc
diff --git a/chrome/browser/android/chrome_feature_list.cc b/chrome/browser/android/chrome_feature_list.cc
index 1e37f8000cd521d6f7dbe146966a459944077b3a..a04b5f45c7f627856d06ee96addd2e61cfc89215 100644
--- a/chrome/browser/android/chrome_feature_list.cc
+++ b/chrome/browser/android/chrome_feature_list.cc
@@ -47,6 +47,7 @@ const base::Feature* kFeaturesExposedToJava[] = {
     &kDownloadsUiFeature,
     &kImportantSitesInCBD,
     &kImprovedA2HS,
+    &kNativeAndroidHistoryManager,
     &kNoCreditCardAbort,
     &kNTPFakeOmniboxTextFeature,
     &kNTPOfflinePagesFeature,
@@ -100,6 +101,9 @@ const base::Feature kImportantSitesInCBD{"ImportantSitesInCBD",
 const base::Feature kImprovedA2HS{"ImprovedA2HS",
                                   base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kNativeAndroidHistoryManager{
+  "AndroidHistoryManager", base::FEATURE_DISABLED_BY_DEFAULT};
+
 const base::Feature kNoCreditCardAbort{"NoCreditCardAbort",
                                        base::FEATURE_DISABLED_BY_DEFAULT};