Move top_20 tests to a separate suite

tools/chrome_proxy/live_tests/chrome_proxy_measurements.py

+# Copyright 2015 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
+
+from common import chrome_proxy_metrics as metrics
+from telemetry.core import exceptions
+from telemetry.page import page_test
+
+class ChromeProxyLatency(page_test.PageTest):
+  """Chrome proxy latency measurement."""
+
+  def __init__(self, *args, **kwargs):
+    super(ChromeProxyLatency, self).__init__(*args, **kwargs)
+    self._metrics = metrics.ChromeProxyMetric()

[sclittle, 2015/04/30 00:07:58]

I'm confused, where is metrics.ChromeProxyMetric()? I don't see it in the list
of files for this CL.

[bustamante, 2015/04/30 20:30:40]

I'm not sure why this worked, but I added back chrome_proxy_metrics.py with this
class and the validation code.  Done.

+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs('--enable-spdy-proxy-auth')
+
+  def WillNavigateToPage(self, page, tab):
+    tab.ClearCache(force=True)
+
+  def ValidateAndMeasurePage(self, page, tab, results):
+    # Wait for the load event.
+    tab.WaitForJavaScriptExpression('performance.timing.loadEventStart', 300)
+    self._metrics.AddResultsForLatency(tab, results)
+
+
+class ChromeProxyDataSaving(page_test.PageTest):
+  """Chrome proxy data saving measurement."""
+  def __init__(self, *args, **kwargs):
+    super(ChromeProxyDataSaving, self).__init__(*args, **kwargs)
+    self._metrics = metrics.ChromeProxyMetric()
+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs('--enable-spdy-proxy-auth')
+
+  def WillNavigateToPage(self, page, tab):
+    tab.ClearCache(force=True)
+    self._metrics.Start(page, tab)
+
+  def ValidateAndMeasurePage(self, page, tab, results):
+    # Wait for the load event.
+    tab.WaitForJavaScriptExpression('performance.timing.loadEventStart', 300)
+    self._metrics.Stop(page, tab)
+    self._metrics.AddResultsForDataSaving(tab, results)