[system health] Add media browsing 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 f41de53199c1146160af96647b387a6ebee9e1e6..06af50d17c6c79cb9e75e809c7038907e5e058b9 100644
--- a/tools/perf/page_sets/data/system_health_desktop.json
+++ b/tools/perf/page_sets/data/system_health_desktop.json
@@ -85,6 +85,15 @@
         ],
         "system_health_desktop_021.wpr": [
             "browse:news:flipboard"
+        ],
+        "system_health_desktop_024.wpr": [
+            "load:media:imgur"

[petrcermak, 2016/08/04 13:32:42]

I suggest you move this (manually - I know that the description says you
shouldn't do it) under system_health_desktop_025.wpr and delete
system_health_desktop_024.wpr altogether. That way, both the browsing and
loading will have exactly the same condition (better for comparison).

[Hannes Payer (out of office), 2016/08/05 10:21:05]

Done.

+        ],
+        "system_health_desktop_025.wpr": [
+            "browse:media:imgur"
+        ],
+        "system_health_desktop_026.wpr": [
+            "browse:media:youtube"
         ]
     },
     "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating."