Add System health stories for Emerging market

tools/perf/page_sets/system_health/loading_stories.py

Index: tools/perf/page_sets/system_health/loading_stories.py
diff --git a/tools/perf/page_sets/system_health/loading_stories.py b/tools/perf/page_sets/system_health/loading_stories.py
index f3ab950d6bcff18cdc81910a676a3992f380800f..4d3e2a0d43ba73931ce3e27700a4c1c0f328b062 100644
--- a/tools/perf/page_sets/system_health/loading_stories.py
+++ b/tools/perf/page_sets/system_health/loading_stories.py
@@ -39,7 +39,7 @@ class LoadYahooStory(_LoadingStory):
   URL = 'https://search.yahoo.com/search;_ylt=?p=google'
 
 
-class LoadAmazonStory(_LoadingStory):
+class LoadAmazonDesktopStory(_LoadingStory):
   NAME = 'load:search:amazon'
   URL = 'https://www.amazon.com/s/?field-keywords=nexus'
 
@@ -71,6 +71,20 @@ class LoadEbayStory(_LoadingStory):
   URL = 'https://www.ebay.com/sch/i.html?_nkw=headphones'
 
 
+class LoadAvitoStory(_LoadingStory):
+  NAME = 'load:shopping:avito'

[perezju, 2017/04/10 10:13:56]

As suggested on the doc, I propose *not* to add load stories for avito/olx; But
it's fine to add load stories for flipkart/lazada.

The rationale is that we would like to remove all load stories in the future, if
they can be reasonably covered by just measuring "memory usage after load" on
existing browse stories.

[ssid, 2017/04/11 03:55:57]

Done.

+  URL = 'https://m.avito.ru/rossiya'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
+class LoadOLXStory(_LoadingStory):
+  NAME = 'load:shopping:olx'
+  URL = 'http://m.olx.co.id'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
 ################################################################################
 # Social networks.
 ################################################################################
@@ -139,9 +153,10 @@ class LoadFlipboardStory(_LoadingStory):
   URL = 'https://flipboard.com/explore'
 
 
-class LoadHackerNewsStory(_LoadingStory):
+class LoadHackerNewsDesktopStory(_LoadingStory):
   NAME = 'load:news:hackernews'
   URL = 'https://news.ycombinator.com'
+  SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY

[perezju, 2017/04/10 10:13:56]

I thought you were not going to remove stories now?

[ssid, 2017/04/11 03:55:57]

Sorry, this was error.

 
 
 class LoadNytimesDesktopStory(_LoadingStory):
@@ -208,6 +223,35 @@ class LoadWashingtonPostMobileStory(_LoadingStory):
 class LoadWikipediaStory(_LoadingStory):
   NAME = 'load:news:wikipedia'
   URL = 'https://en.wikipedia.org/wiki/Science'
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
+class LoadCricBuzzStory(_LoadingStory):
+  NAME = 'load:news:cricbuzz'

[perezju, 2017/04/10 10:13:56]

Similarly, do not add more load news stories.

But OK to add load stories load stories that match your new EM stories (e.g.
load:shopping:flipkart).

[ssid, 2017/04/11 03:55:57]

I do not know how else i can add these stories. I have removed as much as I
could from load stories.

+  URL = 'http://m.cricbuzz.com'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
+class LoadIrctcStory(_LoadingStory):
+  NAME = 'load:news:irctc'
+  URL = 'https://www.irctc.co.in'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
+class LoadGloboStory(_LoadingStory):
+  NAME = 'load:news:globo'
+  URL = 'http://www.globo.com/'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+
+class LoadPolymerStory(_LoadingStory):
+  NAME = 'load:news:polymer'
+  URL = 'https://polymer-news.appspot.com/'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
 
 
 ################################################################################
@@ -331,11 +375,6 @@ class LoadGmailMobileStory(_LoadGmailBaseStory):
     action_runner.WaitForJavaScriptCondition(
         'document.getElementById("apploadingdiv").style.height === "0px"')
 
-class LoadMapsStory(_LoadingStory):
-  NAME = 'load:tools:maps'
-  URL = 'https://www.google.com/maps/place/London,+UK/'
-
-
 class LoadStackOverflowStory(_LoadingStory):
   NAME = 'load:tools:stackoverflow'
   URL = (