Extension profile generator + benchmark for startup with profile.

tools/perf/benchmarks/start_with_ext.py

Index: tools/perf/benchmarks/start_with_ext.py
diff --git a/tools/perf/benchmarks/start_with_ext.py b/tools/perf/benchmarks/start_with_ext.py
new file mode 100644
index 0000000000000000000000000000000000000000..95304229ffde261d38e82df7afe0c3289bf9b751
--- /dev/null
+++ b/tools/perf/benchmarks/start_with_ext.py
@@ -0,0 +1,56 @@
+# 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.
+
+from core import perf_benchmark
+from measurements import startup
+import page_sets
+from telemetry import benchmark
+
+
+class _StartWithExt(perf_benchmark.PerfBenchmark):
+  """Base benchmark for testing startup with extensions."""
+  page_set = page_sets.BlankPageSetWithExtensionProfile
+  tag = None
+
+  @classmethod
+  def Name(cls):
+    return 'start_with_ext.blank_page'
+
+  @classmethod
+  def ValueCanBeAddedPredicate(cls, _, is_first_result):
+    return not is_first_result
+
+  def SetExtraBrowserOptions(self, options):
+    options.disable_default_apps = False
+
+  def CreatePageTest(self, _):
+    is_cold = (self.tag == 'cold')
+    return startup.Startup(cold=is_cold)
+
+
+@benchmark.Enabled('has tabs')
+@benchmark.Enabled('mac') # Currently only works on mac.
+@benchmark.Disabled('win', 'linux', 'reference', 'android')
+class StartWithExtCold(_StartWithExt):
+  """Measure time to start Chrome cold with extensions."""
+  options = {'pageset_repeat': 5}
+  tag = 'cold'
+
+  @classmethod
+  def Name(cls):
+    return 'start_with_ext.cold.blank_page'
+
+
+@benchmark.Enabled('has tabs')
+@benchmark.Enabled('mac') # Currently only works on mac.
+@benchmark.Disabled('win', 'linux', 'reference', 'android')
+class StartWithExtWarm(_StartWithExt):
+  """Measure time to start Chrome warm with extensions."""
+  options = {'pageset_repeat': 20}
+  tag = 'warm'
+
+  @classmethod
+  def Name(cls):
+    return 'start_with_ext.warm.blank_page'
+