[Telemetry] Add API for updating ts_proxy_server's traffic settings

telemetry/telemetry/page/__init__.py

Index: telemetry/telemetry/page/__init__.py
diff --git a/telemetry/telemetry/page/__init__.py b/telemetry/telemetry/page/__init__.py
index 64de29b0b9b0fa8f229e5abcbd4a0d8cb7e51670..516bf2507b29b665d60730b0c991c666c38967c6 100644
--- a/telemetry/telemetry/page/__init__.py
+++ b/telemetry/telemetry/page/__init__.py
@@ -9,8 +9,9 @@ import urlparse
 from py_utils import cloud_storage  # pylint: disable=import-error
 
 from telemetry import story
-from telemetry.page import shared_page_state
 from telemetry.page import cache_temperature as cache_temperature_module
+from telemetry.page import shared_page_state
+from telemetry.page import traffic_setting as traffic_setting_module
 from telemetry.internal.actions import action_runner as action_runner_module
 
 
@@ -22,7 +23,8 @@ class Page(story.Story):
                startup_url='', make_javascript_deterministic=True,
                shared_page_state_class=shared_page_state.SharedPageState,
                grouping_keys=None,
-               cache_temperature=cache_temperature_module.ANY):
+               cache_temperature=cache_temperature_module.ANY,
+               traffic_setting=traffic_setting_module.NONE):
     self._url = url
 
     super(Page, self).__init__(
@@ -49,6 +51,8 @@ class Page(story.Story):
     if cache_temperature != cache_temperature_module.ANY:
       self.grouping_keys['cache_temperature'] = cache_temperature
 
+    self._traffic_setting = traffic_setting
+
     # Whether to collect garbage on the page before navigating & performing
     # page actions.
     self._collect_garbage_before_run = True
@@ -70,6 +74,10 @@ class Page(story.Story):
     return self._cache_temperature
 
   @property
+  def traffic_setting(self):
+    return self._traffic_setting
+
+  @property
   def startup_url(self):
     return self._startup_url