First cut of chrome-proxy (data reduction proxy) measurements.

tools/telemetry/telemetry/page/actions/navigate.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from telemetry.page.actions import page_action
 
 class NavigateAction(page_action.PageAction):
   def __init__(self, attributes=None):
     super(NavigateAction, self).__init__(attributes)
 
   def RunAction(self, page, tab, previous_action):
     if page.is_file:
       target_side_url = tab.browser.http_server.UrlOf(page.file_path_url)
     else:
       target_side_url = page.url
 
-    tab.Navigate(target_side_url, page.script_to_evaluate_on_commit)
+    if hasattr(self, 'timeout_seconds') and self.timeout_seconds:

[tonyg, 2014/03/12 02:08:37]

Please break this out to a new CL and mail to dtu. He is doing significant work
on this API and I want to make sure he's happy w/ the new attr.

[bolian, 2014/03/19 00:20:03]

Split out as https://codereview.chromium.org/202483006/

+      tab.Navigate(target_side_url,
+                   page.script_to_evaluate_on_commit,
+                   self.timeout_seconds)
+    else:
+      tab.Navigate(target_side_url, page.script_to_evaluate_on_commit)
     tab.WaitForDocumentReadyStateToBeInteractiveOrBetter()