Implement 'skip_navigate_on_repeat' option

tools/telemetry/telemetry/page/page_runner_repeat.py

Index: tools/telemetry/telemetry/page/page_runner_repeat.py
diff --git a/tools/telemetry/telemetry/page/page_runner_repeat.py b/tools/telemetry/telemetry/page/page_runner_repeat.py
index acec0b0b714b01916fd833569d53a0cee77b2de8..5c80f5c68fd00010791e04ebb740d174b355d1b6 100644
--- a/tools/telemetry/telemetry/page/page_runner_repeat.py
+++ b/tools/telemetry/telemetry/page/page_runner_repeat.py
@@ -52,3 +52,10 @@ class PageRunnerRepeatState(object):
           self.page_iters >= self.options.page_repeat_iters):
       return False
     return True
+
+  def ShouldNavigate(self, skip_navigate_on_repeat):
+    """Returns whether we are navigating to pages on page repeats.
+
+    Always navigate on the first iteration of a page and on every new pageset.
+    """
+    return self.page_iters == 0 or not skip_navigate_on_repeat