[perf] Add load:media:facebook_photos:2018 system health story

This CL was created automatically with tools/perf/update_wpr script

R=perezju@chromium.org

Bug: 878390
Change-Id: I753f512b660e613d8e6f622f81ef2aa3600d4310
Reviewed-on: https://chromium-review.googlesource.com/c/1329631Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607243}

tools/perf/page_sets/data/system_health_desktop.json

@@ -135,6 +135,9 @@
         "load:media:dailymotion": {
             "DEFAULT": "system_health_desktop_003.wprgo"
         },
+        "load:media:facebook_photos:2018": {
+            "DEFAULT": "system_health_desktop_eba368f102.wprgo"
+        },
         "load:media:flickr": {
             "DEFAULT": "system_health_desktop_003.wprgo"
         },
@@ -315,4 +318,4 @@
     },
     "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating.",
     "platform_specific": true
-}
+}
\ No newline at end of file

tools/perf/page_sets/data/system_health_desktop_eba368f102.wprgo.sha1

+eba368f102428e7bde9d96350ba20b5967cffe27
\ No newline at end of file

tools/perf/page_sets/system_health/loading_stories.py

@@ -363,6 +363,15 @@ class LoadFacebookPhotosDesktopStory(_LoadingStory):
   SUPPORTED_PLATFORMS = platforms.NO_PLATFORMS
 
 
+class LoadFacebookPhotosDesktopStory2018(_LoadingStory):
+  """Load a page of rihanna's facebook with a photo."""
+  NAME = 'load:media:facebook_photos:2018'
+  URL = (
+    'https://www.facebook.com/rihanna/photos/pb.10092511675.-2207520000.1541795576./10155941787036676/?type=3&theater')
+  TAGS = [story_tags.YEAR_2018]
+  SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY
+
+
 ################################################################################
 # Online tools (documents, emails, storage, ...).
 ################################################################################