[telemetry] Add new benchmarks and rename them all.

tools/perf/benchmarks/page_cycler.py

Index: tools/perf/benchmarks/page_cycler.py
diff --git a/tools/perf/benchmarks/page_cycler.py b/tools/perf/benchmarks/page_cycler.py
index 1552bc8c4a5607e5c8395212839794a8ce2098f5..58bd154b197a811f55872e29fc025051808ab312 100644
--- a/tools/perf/benchmarks/page_cycler.py
+++ b/tools/perf/benchmarks/page_cycler.py
@@ -68,6 +68,7 @@ class PageCyclerMoz(test.Test):
 
 class PageCyclerNetsimTop10(test.Test):
   """Measures load time of the top 10 sites under simulated cable network."""
+  name = 'netsim.top_10'
   test = page_cycler.PageCycler
   page_set = 'page_sets/top_10.json'
   options = {
@@ -85,6 +86,12 @@ class PageCyclerNetsimTop10(test.Test):
     self.test.clear_cache_before_each_run = True
 
 
+class PageCyclerToughLayoutCases(test.Test):
+  test = page_cycler.PageCycler
+  page_set = 'page_sets/tough_layout_cases.json'
+  options = {'pageset_repeat_iters': 10}
+
+
 class PageCyclerTypical25(test.Test):
   test = page_cycler.PageCycler
   page_set = 'page_sets/typical_25.json'