[Android] Implement perf tests to platform mode.

build/android/test_runner.py

Index: build/android/test_runner.py
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index 8f0ac08edfe06ed8d25ed6a43024e5e2ab1e08b4..497642c5233d914de5451f2d5116b856a3342d44 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -594,6 +594,13 @@ def AddPerfTestOptions(parser):
                      help='Only starts tests when the battery is charged above '
                           'given level.')
   group.add_argument('--known-devices-file', help='Path to known device list.')
+  group.add_argument(
+      '--repeat', dest='repeat', type=int, default=0,
+      help='Number of times to repeat the specified set of tests.')
+  group.add_argument('--break-on-failure', '--break_on_failure',
+                     dest='break_on_failure', action='store_true',
+                     help='Whether to break on failure.')
+
   AddCommonOptions(parser)
   AddDeviceOptions(parser)
 
@@ -686,6 +693,24 @@ def _RunMonkeyTests(args, devices):
   return exit_code
 
 
+def RunPerfTestsInPlatformMode(args):
+  def infra_error(message):
+    logging.fatal(message)
+    sys.exit(constants.INFRA_EXIT_CODE)
+
+  if args.single_step or args.steps:
+    return RunTestsInPlatformMode(args)
+
+  # These are not full perf test runs, they are for printing out past runs or
+  # lists of tests. As such, they do not require the retry logic or results
+  # logic. They only need to perform the action required and return the correct
+  # return code.
+  with environment_factory.CreateEnvironment(args, infra_error) as env:
+    with test_instance_factory.CreateTestInstance(args, infra_error) as test:
+      with test_run_factory.CreateTestRun(
+          args, env, test, infra_error) as test_run:
+        return test_run.RunTests()

[mikecase (-- gone --), 2016/06/01 17:40:28]

Not sure I 100% sure I get what this does. 

[rnephew (Reviews Here), 2016/06/01 20:32:05]

Talked offline about it. Also, before landing this I plan to back out some of
these changes so that it wont go live when this lands.

+
 def _RunPerfTests(args, active_devices):
   """Subcommand of RunTestsCommands which runs perf tests."""
   perf_options = ProcessPerfTestOptions(args)
@@ -799,6 +824,8 @@ def RunTestsCommand(args): # pylint: disable=too-many-return-statements
 
   if args.enable_platform_mode or command in ('gtest', 'instrumentation'):
     return RunTestsInPlatformMode(args)
+  if command == 'perf':
+    return RunPerfTestsInPlatformMode(args)
 
   forwarder.Forwarder.RemoveHostLog()
   if not ports.ResetTestServerPortAllocation():
@@ -827,6 +854,7 @@ _SUPPORTED_IN_PLATFORM_MODE = [
   'gtest',
   'instrumentation',
   'uirobot',
+  'perf',

[mikecase (-- gone --), 2016/06/01 17:40:28]

super nit: alphabetize

[rnephew (Reviews Here), 2016/06/01 20:32:05]

Done.

 ]