[perf] Add load:news:qq:2018 system health story

Bug: 878390
Change-Id: I550b09fdfdd3b1a76cb28ddd582002a52e680991
Reviewed-on: https://chromium-review.googlesource.com/c/1264588Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597535}

tools/perf/page_sets/data/system_health_desktop.json

@@ -162,6 +162,9 @@
         "load:news:qq": {
             "DEFAULT": "system_health_desktop_010.wprgo"
         },
+        "load:news:qq:2018": {
+            "DEFAULT": "system_health_desktop_413e958e1c.wprgo"
+        },
         "load:news:reddit": {
             "DEFAULT": "system_health_desktop_011.wprgo"
         },

tools/perf/page_sets/data/system_health_desktop_413e958e1c.wprgo.sha1

+413e958e1c59040ad708139260da49435a633925
\ No newline at end of file

tools/perf/page_sets/system_health/loading_stories.py

@@ -205,6 +205,13 @@ class LoadQqMobileStory(_LoadingStory):
   TAGS = [story_tags.INTERNATIONAL, story_tags.YEAR_2016]
 
 
+class LoadQqDesktopStory2018(_LoadingStory):
+  NAME = 'load:news:qq:2018'
+  URL = 'https://news.qq.com'
+  TAGS = [story_tags.INTERNATIONAL, story_tags.YEAR_2018]
+  SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY
+
+
 class LoadRedditDesktopStory(_LoadingStory):
   NAME = 'load:news:reddit'
   URL = 'https://www.reddit.com/r/news/top/?sort=top&t=week'