First version of the PGO recipe.

scripts/slave/recipes/chromium_pgo.py

Index: scripts/slave/recipes/chromium_pgo.py
diff --git a/scripts/slave/recipes/chromium_pgo.py b/scripts/slave/recipes/chromium_pgo.py
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+# Copyright 2014 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.
+
+DEPS = [
+  'bot_update',
+  'chromium',
+  'gclient',
+  'path',
+  'platform',
+  'properties',
+  'python',
+  'step',
+]
+
+
+# List of the benchmark that we run during the profiling step.
+_BENCHMARKS_TO_RUN = {
+  'peacekeeper.dom',
+  'peacekeeper.array',
+  'peacekeeper.html5',
+  'peacekeeper.string',
+  'peacekeeper.render',
+  'dromaeo.domcoreattr',
+  'dromaeo.domcoremodify',
+  'dromaeo.domcorequery',
+  'dromaeo.domcoretraverse',
+  'dromaeo.jslibattrjquery',
+  'dromaeo.jslibattrprototype',
+  'dromaeo.jslibeventjquery',
+  'dromaeo.jslibeventprototype',
+  'dromaeo.jslibmodifyjquery',
+  'dromaeo.jslibmodifyprototype',
+  'dromaeo.jslibstylejquery',
+  'dromaeo.jslibstyleprototype',
+  'dromaeo.jslibtraversejquery',
+  'dromaeo.jslibtraverseprototype',
+  'sunspider',
+  'jsgamebench',
+  'kraken',
+}
+
+
+# Run a telemetry benchmark under the Windows PGO profiler.
+def RunTelemetryBenchmark(api, testname):
+  return api.python(
+      'Telemetry benchmark: %s' % testname,
+      api.path['checkout'].join('tools', 'perf', 'run_benchmark'),
+      ['--profiler=win_pgo_profiler', '--use-live-sites', testname]
+  )
+
+
+def GenSteps(api):
+  api.step.auto_resolve_conflicts = True
+  api.chromium.set_config('chrome_pgo_instrument', BUILD_CONFIG='Release')
+  api.gclient.set_config('chromium_lkgr')
+
+  yield api.chromium.taskkill()
+  yield api.bot_update.ensure_checkout()
+
+  # First step: compilation of the instrumented build.
+  yield api.chromium.runhooks()
+  yield api.chromium.compile()
+
+  # Remove the profile files from the previous builds.
+  yield api.path.rmwildcard('*.pgc',
+                            str(api.chromium.output_dir))
+
+  # Second step: profiling of the instrumented build.
+  for benchmark in _BENCHMARKS_TO_RUN:
+    yield RunTelemetryBenchmark(api, benchmark)
+
+  # Third step: Compilation of the optimized build, this will use the profile
+  #     data files produced by the previous step.
+  api.chromium.set_config('chrome_pgo_optimize', BUILD_CONFIG='Release')
+  yield api.chromium.runhooks()
+  yield api.chromium.compile()
+
+
+def GenTests(api):
+  mastername = 'chromium.fyi'
+  buildername = 'Chromium Win PGO Builder'
+
+  def _sanitize_nonalpha(text):
+    return ''.join(c if c.isalnum() else '_' for c in text)
+
+  yield (
+    api.test('full_%s_%s' % (_sanitize_nonalpha(mastername),
+                             _sanitize_nonalpha(buildername))) +
+    api.properties.generic(mastername=mastername, buildername=buildername) +
+    api.platform('win', 32)
+  )