Add browse:social:instagram:2019 system health story

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

R=perezju@chromium.org

Bug: 878390
Change-Id: I0524c6394bc101490c966abf6ec89ca27a25ffea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816470
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699314}

tools/perf/benchmarks/system_health_smoke_test.py

@@ -41,6 +41,7 @@ _DISABLED_TESTS = frozenset({
   # and will later be removed.
   'system_health.memory_mobile/browse:tech:discourse_infinite_scroll',
   'system_health.memory_mobile/browse:social:facebook_infinite_scroll',
+  'system_health.memory_mobile/browse:social:instagram',
   'system_health.memory_mobile/browse:social:tumblr_infinite_scroll',
   'system_health.memory_mobile/browse:tools:maps',
   'system_health.memory_mobile/browse:news:cnn',

tools/perf/page_sets/data/system_health_mobile.json

@@ -99,6 +99,9 @@
         "browse:social:instagram": {
             "DEFAULT": "system_health_mobile_060.wprgo"
         },
+        "browse:social:instagram:2019": {
+            "DEFAULT": "system_health_mobile_c38cfb84fc.wprgo"
+        },
         "browse:social:pinterest_infinite_scroll": {
             "DEFAULT": "system_health_mobile_063.wprgo"
         },

tools/perf/page_sets/data/system_health_mobile_c38cfb84fc.wprgo.sha1

+c38cfb84fcfa54c0540d69f2e4d7f19b46d04ff0
\ No newline at end of file

tools/perf/page_sets/system_health/browsing_stories.py

@@ -161,6 +161,22 @@ class InstagramMobileStory(_ArticleBrowsingStory):
     action_runner.NavigateBack()
 
 
+class InstagramMobileStory2019(_ArticleBrowsingStory):
+  NAME = 'browse:social:instagram:2019'
+  URL = 'https://www.instagram.com/badgalriri/'
+  ITEM_SELECTOR = '[class="v1Nh3 kIKUG  _bz0w"] a'
+  ITEMS_TO_VISIT = 8
+
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET, story_tags.YEAR_2019]
+
+  def _WaitForNavigation(self, action_runner):
+    action_runner.WaitForElement(selector='[title="badgalriri"]')
+
+  def _NavigateBack(self, action_runner):
+    action_runner.NavigateBack()
+
+
 class FlipboardDesktopStory2018(_ArticleBrowsingStory):
   NAME = 'browse:news:flipboard:2018'
   URL = 'https://flipboard.com/explore'