Move clear_system_cache_for_browser_and_profile_on_start to BrowserOptions

tools/telemetry/telemetry/core/browser_options.py

Index: tools/telemetry/telemetry/core/browser_options.py
diff --git a/tools/telemetry/telemetry/core/browser_options.py b/tools/telemetry/telemetry/core/browser_options.py
index 8fcb2e5761c615def016b4c893d455f6c67eacee..cf587de7be8f1f9016a006f8da6ce9f2159ccf2b 100644
--- a/tools/telemetry/telemetry/core/browser_options.py
+++ b/tools/telemetry/telemetry/core/browser_options.py
@@ -29,7 +29,6 @@ class BrowserFinderOptions(optparse.Values):
     self.cros_ssh_identity = None
 
     self.extensions_to_load = []
-    self.clear_sytem_cache_for_browser_and_profile_on_start = False
 
     # If set, copy the generated profile to this path on exit.
     self.output_profile_path = None
@@ -214,6 +213,8 @@ class BrowserOptions():
     self._extra_browser_args = set()
     self.extra_wpr_args = []
 
+    self.clear_sytem_cache_for_browser_and_profile_on_start = False
+
   def AddCommandLineOptions(self, parser):
     group = optparse.OptionGroup(parser, 'Browser options')
     profile_choices = profile_types.GetProfileTypes()