Forward {Will/Did}StartBrowser calls to page test

tools/telemetry/telemetry/page/record_wpr.py

 #!/usr/bin/env python
 # Copyright 2012 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.
 import logging
 import sys
 import time
 
 from telemetry import benchmark
 from telemetry.core import browser_options
@@ skipping 10 matching lines @@
 
 class RecorderPageTest(page_test.PageTest):  # pylint: disable=W0223
   def __init__(self, action_names):
     super(RecorderPageTest, self).__init__()
     self._action_names = action_names
     self.page_test = None
 
   def CanRunForPage(self, page):
     return page.url.startswith('http')
 
+  def WillStartBrowser(self, browser):
+    if self.page_test:
+      self.page_test.WillStartBrowser(browser)
+
+  def DidStartBrowser(self, browser):
+    if self.page_test:
+      self.page_test.DidStartBrowser(browser)
+
   def WillNavigateToPage(self, page, tab):
     """Override to ensure all resources are fetched from network."""
     tab.ClearCache(force=False)
     if self.page_test:
       self.page_test.options = self.options
       self.page_test.WillNavigateToPage(page, tab)
 
   def DidNavigateToPage(self, page, tab):
     if self.page_test:
       self.page_test.DidNavigateToPage(page, tab)
@@ skipping 140 matching lines @@
 def Main(base_dir):
   quick_args = [a for a in sys.argv[1:] if not a.startswith('-')]
   if len(quick_args) != 1:
     print >> sys.stderr, 'Usage: record_wpr <PageSet|Benchmark>\n'
     sys.exit(1)
   target = quick_args.pop()
   wpr_recorder = WprRecorder(base_dir, target)
   results = wpr_recorder.Record()
   wpr_recorder.HandleResults(results)
   return min(255, len(results.failures))