Safety Tips: Update default lookalike parameter values to enabled.

This CL swaps the default parameter values for lookalike heuristics in
Safety Tips to default to enabled. This mitigates an issue in metrics
recording where we were not identifying lookalike sites in the control
group, since their parameters were enabled.

This is not a user-visible change.

Bug: 1022016
Change-Id: Ie1373ce1543a2916de1a442ccc2371f485427cb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1910844
Auto-Submit: Joe DeBlasio <jdeblasio@chromium.org>
Commit-Queue: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714600}

chrome/browser/reputation/local_heuristics.cc

@@ -19,12 +19,12 @@ namespace {
 using MatchType = LookalikeUrlInterstitialPage::MatchType;
 
 const base::FeatureParam<bool> kEnableLookalikeTopSites{
-    &security_state::features::kSafetyTipUI, "topsites", false};
+    &security_state::features::kSafetyTipUI, "topsites", true};
 const base::FeatureParam<bool> kEnableLookalikeEditDistance{
-    &security_state::features::kSafetyTipUI, "editdistance", false};
+    &security_state::features::kSafetyTipUI, "editdistance", true};
 const base::FeatureParam<bool> kEnableLookalikeEditDistanceSiteEngagement{
     &security_state::features::kSafetyTipUI, "editdistance_siteengagement",
-    false};
+    true};
 
 }  // namespace
 

chrome/browser/ui/views/page_info/safety_tip_page_info_bubble_view_browsertest.cc

@@ -167,7 +167,10 @@ class SafetyTipPageInfoBubbleViewBrowserTest
         break;
       case UIStatus::kEnabled:
         feature_list_.InitWithFeaturesAndParameters(
-            {{security_state::features::kSafetyTipUI, {}},
+            {{security_state::features::kSafetyTipUI,
+              {{"topsites", "false"},
+               {"editdistance", "false"},
+               {"editdistance_siteengagement", "false"}}},
              {features::kLookalikeUrlNavigationSuggestionsUI,
               {{"topsites", "true"}}}},
             {});
@@ -610,9 +613,11 @@ IN_PROC_BROWSER_TEST_P(SafetyTipPageInfoBubbleViewBrowserTest,
   const GURL kLookalikeUrl = GetURL("googlé.sk");
   SetEngagementScore(browser(), kLookalikeUrl, kLowEngagement);
   NavigateToURL(browser(), kLookalikeUrl, WindowOpenDisposition::CURRENT_TAB);
-  histograms.ExpectBucketCount(
-      kHistogramName, security_state::SafetyTipStatus::kLookalike,
-      ui_status() == UIStatus::kEnabledWithAllFeatures ? 1 : 0);
+
+  // Record metrics for lookalike domains unless explicitly disabled.
+  histograms.ExpectBucketCount(kHistogramName,
+                               security_state::SafetyTipStatus::kLookalike,
+                               ui_status() == UIStatus::kEnabled ? 0 : 1);
   histograms.ExpectTotalCount(kHistogramName, 3);
 }