Add nytimes_desktop pageset and delete 4 no longer needed pagesets

tools/skp/page_sets/skia_nytimes_desktop.py

Index: tools/skp/page_sets/skia_nytimes_desktop.py
diff --git a/tools/skp/page_sets/skia_nytimes_nexus10.py b/tools/skp/page_sets/skia_nytimes_desktop.py
similarity index 75%
rename from tools/skp/page_sets/skia_nytimes_nexus10.py
rename to tools/skp/page_sets/skia_nytimes_desktop.py
index 3d015d1bafe38b39db2cba05af8902e6a35cbc23..d8f9ed7f089aae3d766718513147310f98e00432 100644
--- a/tools/skp/page_sets/skia_nytimes_nexus10.py
+++ b/tools/skp/page_sets/skia_nytimes_desktop.py
@@ -15,22 +15,22 @@ class SkiaBuildbotDesktopPage(page_module.Page):
         url=url,
         page_set=page_set,
         credentials_path='data/credentials.json')
-    self.user_agent_type = 'tablet'
-    self.archive_data_file = 'data/skia_nytimes_nexus10.json'
+    self.user_agent_type = 'desktop'
+    self.archive_data_file = 'data/skia_nytimes_desktop.json'
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
     action_runner.Wait(15)
 
 
-class SkiaNytimesNexus10PageSet(page_set_module.PageSet):
+class SkiaNytimesDesktopPageSet(page_set_module.PageSet):
 
   """ Pages designed to represent the median, not highly optimized web """
 
   def __init__(self):
-    super(SkiaNytimesNexus10PageSet, self).__init__(
-      user_agent_type='tablet',
-      archive_data_file='data/skia_nytimes_nexus10.json')
+    super(SkiaNytimesDesktopPageSet, self).__init__(
+      user_agent_type='desktop',
+      archive_data_file='data/skia_nytimes_desktop.json')
 
     urls_list = [
       # Why: for Clank CY