Further increase the navigation timeout to 180s for page cycler stories

tools/perf/page_sets/page_cycler_story.py

Index: tools/perf/page_sets/page_cycler_story.py
diff --git a/tools/perf/page_sets/page_cycler_story.py b/tools/perf/page_sets/page_cycler_story.py
index 5565ac87b15f3c8cf93bf0d4f7de1228a8d3eddd..a5fabf12a64748756283001f8a27c06d5dd6dd9a 100644
--- a/tools/perf/page_sets/page_cycler_story.py
+++ b/tools/perf/page_sets/page_cycler_story.py
@@ -8,6 +8,7 @@ from telemetry.page import shared_page_state
 
 
 _TTI_WAIT_TIME = 10
+_NAVIGATION_TIMEOUT = 180
 _WEB_CONTENTS_TIMEOUT = 180
 
 class PageCyclerStory(page.Page):
@@ -25,7 +26,7 @@ class PageCyclerStory(page.Page):
     url = self.file_path_url_with_scheme if self.is_file else self.url
     action_runner.Navigate(url,
                            self.script_to_evaluate_on_commit,
-                           timeout_in_seconds = 120)
+                           timeout_in_seconds=_NAVIGATION_TIMEOUT)
 
   def RunPageInteractions(self, action_runner):
     action_runner.tab.WaitForDocumentReadyStateToBeComplete(