Add NTPCondensedLayout to test config.

testing/variations/fieldtrial_testing_config.json

Index: testing/variations/fieldtrial_testing_config.json
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index f72343545698b3f8f6362e85fe02b9d2f3ea8f1f..d27dc81ab6c2269bacd27fc0ad57d1a54786d527 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -1521,6 +1521,26 @@
             ]
         }
     ],
+    "NTPCondensedLayout": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "condensed_tile_layout_for_small_screens_enabled": "true"
+                    },
+                    "enable_features": [
+                        "NTPCondensedLayout",
+                        "NTPCondensedTileLayout",
+                        "NTPShowGoogleGInOmnibox"
+                    ]
+                }
+            ]
+        }
+    ],
     "NTPFaviconsFromNewServer": [
         {
             "platforms": [