Add NTPCondensedLayout to test config.

testing/variations/fieldtrial_testing_config.json

 {
     "AlternateComponentUrls": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "ios",
                 "linux",
                 "mac",
                 "win"
@@ skipping 1503 matching lines @@
                         "user_classifier_active_consumer_clicks_at_least_once_per_hours": "96",
                         "user_classifier_rare_user_opens_ntp_at_most_once_per_hours": "66"
                     },
                     "enable_features": [
                         "NTPArticleSuggestions"
                     ]
                 }
             ]
         }
     ],
+    "NTPCondensedLayout": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "condensed_tile_layout_for_small_screens_enabled": "true"
+                    },
+                    "enable_features": [
+                        "NTPCondensedLayout",
+                        "NTPCondensedTileLayout",
+                        "NTPShowGoogleGInOmnibox"
+                    ]
+                }
+            ]
+        }
+    ],
     "NTPFaviconsFromNewServer": [
         {
             "platforms": [
                 "android"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
                         "ContentSuggestionsFaviconsFromNewServer"
@@ skipping 1881 matching lines @@
                 {
                     "name": "Enabled",
                     "enable_features": [
                         "use-new-media-cache"
                     ]
                 }
             ]
         }
     ]
 }