Use Systrace tracing controller in profile_chrome

systrace/bin/adb_profile_chrome_startup

Index: systrace/bin/adb_profile_chrome_startup
diff --git a/systrace/bin/adb_profile_chrome_startup b/systrace/bin/adb_profile_chrome_startup
index 80a266bfd2272c735466acbaed728a8b6284e2c1..fed3416992c5a860f128e6c0230f4414df61788a 100755
--- a/systrace/bin/adb_profile_chrome_startup
+++ b/systrace/bin/adb_profile_chrome_startup
@@ -26,6 +26,11 @@ sys.path.append(os.path.join(_CATAPULT_DIR, 'devil'))
 from devil.android import device_utils
 
 
+_CHROME_STARTUP_MODULES = [atrace_tracing_agent,
+                           chrome_startup_tracing_agent]
+_DEFAULT_CHROME_CATEGORIES = '_DEFAULT_CHROME_CATEGORIES'
+
+
 def _CreateOptionParser():
   parser = optparse.OptionParser(description='Record about://tracing profiles '
                                  'from Android browsers startup, combined with '
@@ -45,7 +50,7 @@ def _CreateOptionParser():
                     'with gzip. ', action='store_true')
   parser.add_option('-t', '--time', help='Stops tracing after N seconds, 0 to '
                     'manually stop (startup trace ends after at most 5s).',
-                    default=5, metavar='N', type='int')
+                    default=5, metavar='N', type='int', dest='trace_time')
 
   parser.add_option_group(chrome_startup_tracing_agent.add_options(parser))
   parser.add_option_group(atrace_tracing_agent.add_options(parser))
@@ -68,29 +73,26 @@ def main():
   device = devices[0]
   package_info = profiler.GetSupportedBrowsers()[options.browser]
 
+  options.device = device
+  options.package_info = package_info
+
+  # TODO(washingtonp): Once Systrace uses all of the profile_chrome agents,
+  # manually setting these options will no longer be necessary and should be
+  # removed.
+  options.ring_buffer = False
+  options.trace_memory = False
+  options.chrome_categories = _DEFAULT_CHROME_CATEGORIES
+
   if options.atrace_categories in ['list', 'help']:
     ui.PrintMessage('\n'.join(
         atrace_tracing_agent.AtraceAgent.GetCategories(device)))
     return 0
-  atrace_categories = (options.atrace_categories.split(',')
-                         if options.atrace_categories else [])
-  enabled_agents = []
-  # Enable the atrace and chrome agents. The atrace agent should go
-  # first because otherwise the resulting traces miss early atrace data.
-  if atrace_categories:
-    enabled_agents.append(atrace_tracing_agent.AtraceAgent(
-        device, atrace_categories, False))
-  enabled_agents.append(
-      chrome_startup_tracing_agent.ChromeStartupTracingAgent(
-          device, package_info, options.cold, options.url))
-  if options.output:
-    options.output = os.path.expanduser(options.output)
   result = profiler.CaptureProfile(options,
-                                   enabled_agents,
-                                   options.time,
-                                   output=options.output,
+                                   options.trace_time,
+                                   _CHROME_STARTUP_MODULES,
+                                   output=options.output_file,
                                    compress=options.compress,
-                                   write_json=options.json)
+                                   write_json=options.write_json)
   if options.view:
     if sys.platform == 'darwin':
       os.system('/usr/bin/open %s' % os.path.abspath(result))