[Telemetry] Add a page set option to use all cold page loads.

tools/perf/perf_tools/page_cycler.py

Index: tools/perf/perf_tools/page_cycler.py
diff --git a/tools/perf/perf_tools/page_cycler.py b/tools/perf/perf_tools/page_cycler.py
index d10adcdf7dc6ba24b7dfd65461323cdd36d5ade7..d6b7ab302ba484fa9322d3905953d27477f7f718 100644
--- a/tools/perf/perf_tools/page_cycler.py
+++ b/tools/perf/perf_tools/page_cycler.py
@@ -36,6 +36,10 @@ class PageCycler(page_measurement.PageMeasurement):
     parser.remove_option('--pageset-repeat')
     parser.add_option(pageset_repeat_option)
 
+    parser.add_option('--cold-page-loads', action='store_true',

[nduca, 2013/06/20 19:54:15]

rather you not expose it as a commandline. just block your bot hookup of this on
dtus benchmark objects.

[tonyg, 2013/06/21 22:36:18]

Done (reluctantly, as I still think this is a useful option).

+        help='Make page loads cold by clearing browser cache between loads.')
+
+
   def WillRunPageSet(self, tab, results):
     # Avoid paying for a cross-renderer navigation on the first page on legacy
     # page cyclers which use the filesystem.