Migrate infinite scrolls to system health stories

tools/perf/page_sets/data/system_health_desktop.json

Index: tools/perf/page_sets/data/system_health_desktop.json
diff --git a/tools/perf/page_sets/data/system_health_desktop.json b/tools/perf/page_sets/data/system_health_desktop.json
index 58d9359dba1228441e394962043900ab6ba8159b..801b9cc85ae808659a409b4127e2efb61c164525 100644
--- a/tools/perf/page_sets/data/system_health_desktop.json
+++ b/tools/perf/page_sets/data/system_health_desktop.json
@@ -45,6 +45,21 @@
         "browse:tools:maps": {
             "DEFAULT": "system_health_desktop_052.wpr"
         },
+        "browse:tech:discourse_infinite_scroll": {
+            "DEFAULT": "infinite_scroll_004.wpr"
+        },
+        "browse:social:facebook_infinite_scroll": {
+            "DEFAULT": "infinite_scroll_001.wpr"
+        },
+        "browse:media:flickr_infinite_scroll": {
+            "DEFAULT": "infinite_scroll_003.wpr"
+        },
+        "browse:social:tumblr_infinite_scroll": {
+            "DEFAULT": "infinite_scroll_002.wpr"
+        },
+        "browse:social:twitter_infinite_scroll": {
+            "DEFAULT": "infinite_scroll_000.wpr"
+        },
         "load:games:alphabetty": {
             "DEFAULT": "system_health_desktop_005.wpr"
         },
@@ -195,4 +210,4 @@
     },
     "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating.",
     "platform_specific": true
-}
+}