Add perf tests for starting Chrome with URL

tools/perf/benchmarks/session_restore_with_url.py

Index: tools/perf/benchmarks/session_restore_with_url.py
diff --git a/tools/perf/benchmarks/session_restore_with_url.py b/tools/perf/benchmarks/session_restore_with_url.py
new file mode 100644
index 0000000000000000000000000000000000000000..e079d661a36042c021a7eb00589341571c3ee7ba
--- /dev/null
+++ b/tools/perf/benchmarks/session_restore_with_url.py
@@ -0,0 +1,24 @@
+# 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 import test
+
+from measurements import session_restore_with_url
+
+
+class SessionRestoreWithUrlCold(test.Test):
+  """Measure time to start Chrome cold with various pages"""

[jeremy, 2013/12/15 13:03:36]

How about something like, also in other file - the part I don't like is "various
pages":
"""Measure Cold Chrome session restore starting to a URL."""

[aberent, 2013/12/16 17:07:43]

Done.

+  tag = 'cold'
+  test = session_restore_with_url.SessionRestoreWithUrl
+  page_set = 'page_sets/startup_pages.json'
+  options = {'cold': True,
+             'pageset_repeat_iters': 5}
+
+class SessionRestoreWithUrlWarm(test.Test):
+  """Measure time to start Chrome cold with various pages"""

[jeremy, 2013/12/15 13:03:36]

s/cold/warm/

[aberent, 2013/12/16 17:07:43]

Done.

+  tag = 'warm'
+  test = session_restore_with_url.SessionRestoreWithUrl
+  page_set = 'page_sets/startup_pages.json'
+  options = {'warm': True,
+             'pageset_repeat_iters': 2}

[aberent, 2013/12/16 17:07:43]

Count left low from test testing, will fix on next upload.

+