[NTP::SectionOrder] Add fieldtrial_testing_config for the experiment.

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 e7b4967f864f60bad23a6e5847145d9756f2a556..24b660137a4651529577d3c922b9ab25e65f6233 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -1299,6 +1299,24 @@
             ]
         }
     ],
+    "NTPPersonalizedSectionRanking": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled-ClickBasedRanker",
+                    "params": {
+                        "category_ranker": "click_based"
+                    },
+                    "enable_features": [
+                        "ContentSuggestionsCategoryRanker"
+                    ]
+                }
+            ]
+        }
+    ],
     "NTPPopularSites": [
         {
             "platforms": [