Show the status of kBillingInterstitial on chrome://safe-browsing

Change-Id: If9f842fd326eedd659999531bc15293ee0137863
Reviewed-on: https://chromium-review.googlesource.com/1220043Reviewed-by: Daniel Rubery <drubery@chromium.org>
Commit-Queue: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590524}

components/safe_browsing/features.cc

@@ -66,7 +66,7 @@ constexpr struct {
 } kExperimentalFeatures[]{
     {&kAdSamplerTriggerFeature, false},
     {&kAdvancedProtectionStatusFeature, true},
-    {&kBillingInterstitial, false},
+    {&kBillingInterstitial, true},
     {&kCheckByURLLoaderThrottle, true},
     {&kForceEnableResetPasswordWebUI, true},
     {&kInspectDownloadedRarFiles, true},