[ios] Enable kIOSLookalikeUrlNavigationSuggestionsUI by default

Change-Id: Ic8fa3a0a239c5ce05aabf545dcae3d8e35aa966e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521051Reviewed-by: Ali Juma <ajuma@chromium.org>
Reviewed-by: Caitlin Fischer <caitlinfischer@google.com>
Commit-Queue: Livvie Lin <livvielin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824717}

ios/web/common/features.mm

@@ -42,8 +42,7 @@ const base::Feature kPreserveScrollViewProperties{
     "PreserveScrollViewProperties", base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kIOSLookalikeUrlNavigationSuggestionsUI{
-    "IOSLookalikeUrlNavigationSuggestionsUI",
-    base::FEATURE_DISABLED_BY_DEFAULT};
+    "IOSLookalikeUrlNavigationSuggestionsUI", base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kAddWebContentDropInteraction{
     "AddWebContentDropInteraction", base::FEATURE_DISABLED_BY_DEFAULT};

testing/variations/fieldtrial_testing_config.json

@@ -3375,21 +3375,6 @@
             ]
         }
     ],
-    "IOSLookalikeInterstitials": [
-        {
-            "platforms": [
-                "ios"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "IOSLookalikeUrlNavigationSuggestionsUI"
-                    ]
-                }
-            ]
-        }
-    ],
     "IOSMessagesOverlay": [
         {
             "platforms": [