[system_health] Reduce the number of article reads in globo story

tools/perf/page_sets/system_health/browsing_stories.py

 # encoding: utf-8
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from page_sets.system_health import platforms
 from page_sets.system_health import story_tags
 from page_sets.system_health import system_health_story
 
 from page_sets.login_helpers import pinterest_login
@@ skipping 559 matching lines @@
   ITEM_SELECTOR = '.dummy-img'
 
 
 @decorators.Disabled('android')  # crbug.com/713036.
 class BrowseGloboMobileStory(_ArticleBrowsingStory):
   NAME = 'browse:news:globo'
   URL = 'http://www.globo.com'
   SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
   TAGS = [story_tags.EMERGING_MARKET]
 
-  ITEMS_TO_VISIT = 4
+  ITEMS_TO_VISIT = 3  # 4 links causes renderer OOM crbug.com/714650.
   ITEM_SELECTOR = '.hui-premium__title'
 
 
 class BrowseCricBuzzMobileStory(_ArticleBrowsingStory):
   NAME = 'browse:news:cricbuzz'
   URL = 'http://m.cricbuzz.com'
   SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
   TAGS = [story_tags.EMERGING_MARKET]
 
   ITEMS_TO_VISIT = 3
@@ skipping 182 matching lines @@
     # Reduce the speed (the current wpr is recorded with speed set to 50)  when
     # recording the wpr. If we scroll too fast, the data will not be recorded
     # well. After recording reset it back to the original value to have a more
     # realistic scroll.
     action_runner.RepeatableBrowserDrivenScroll(
         x_scroll_distance_ratio = 0.0, y_scroll_distance_ratio = 1,
         repeat_count=3, speed=400, timeout=120)
     action_runner.RepeatableBrowserDrivenScroll(
         x_scroll_distance_ratio = 1, y_scroll_distance_ratio = 0,
         repeat_count=3, speed=500, timeout=120)