Fix test_sky in release builds

sky/tools/test_perf

 #!/usr/bin/env python
 # 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.
 
 import os
 import re
-import skypy.paths as paths
+from skypy.paths import Paths
 import subprocess
 import requests
 
 
 SUPPORTED_MIME_TYPES = [
     'text/html',
     'text/sky',
     'text/plain',
 ]
 HTTP_PORT = 9999
 
 DASHBOARD_URL = 'https://chromeperf.appspot.com/add_point'
 
 
-def sky_tester_command(url):
-    content_handlers = ['%s,%s' % (mime_type, 'mojo://sky_viewer/')
-        for mime_type in SUPPORTED_MIME_TYPES]
-    return [
-        paths.MOJO_SHELL_PATH,
-        '--args-for=mojo://native_viewport_service/ --use-headless-config --use-osmesa',
-        '--args-for=mojo://window_manager/ %s' % url,
-        '--content-handlers=%s' % ','.join(content_handlers),
-        '--url-mappings=mojo:window_manager=mojo://sky_tester/',
-        'mojo:window_manager',
-    ]
-
-
-def start_sky_server(port):
-    return subprocess.Popen([
-        os.path.join(paths.SKY_TOOLS_DIRECTORY, 'sky_server'),
-        paths.SRC_ROOT,
-        str(port),
-    ])
-
-
 def values_from_output(output):
     # Parse out the raw values from the PerfRunner output:
     #   values 90, 89, 93 ms
     # We'll probably need a fancier parser at some point.
     match = re.search(r'values (.+) ms', output, flags=re.MULTILINE)
     return map(float, match.group(1).split(', '))
 
 
 def create_json_blob(values):
     revision = subprocess.check_output(["git", "show-ref", "HEAD", "-s"]).strip()
@@ skipping 21 matching lines @@
     }
 
 
 def send_json_to_dashboard(json):
     requests.post(DASHBOARD_URL, params={ 'data': json })
 
 
 class PerfHarness(object):
     def __init__(self):
         self._sky_server = None
+        self.paths = Paths(os.path.join('out', 'Debug'))
 
     def _start_server(self):
-        self._sky_server = start_sky_server(HTTP_PORT)
+        return subprocess.Popen([
+            os.path.join(self.paths.sky_tools_directory, 'sky_server'),
+            self.paths.src_root,
+            str(HTTP_PORT),
+        ])
+
+    def _sky_tester_command(self, url):
+        content_handlers = ['%s,%s' % (mime_type, 'mojo://sky_viewer/')
+            for mime_type in SUPPORTED_MIME_TYPES]
+        return [
+            self.paths.mojo_shell_path,
+            '--args-for=mojo://native_viewport_service/ --use-headless-config --use-osmesa',
+            '--args-for=mojo://window_manager/ %s' % url,
+            '--content-handlers=%s' % ','.join(content_handlers),
+            '--url-mappings=mojo:window_manager=mojo://sky_tester/',
+            'mojo:window_manager',
+        ]
+
 
     def main(self):
         test = 'http://localhost:9999/sky/benchmarks/layout/simple-blocks.sky'
 
         self._start_server()
-        output = subprocess.check_output(sky_tester_command(test))
+        output = subprocess.check_output(self._sky_tester_command(test))
         values = values_from_output(output)
         json = create_json_blob(values)
         send_json_to_dashboard(json)
 
     def shutdown(self):
         if self._sky_server:
             self._sky_server.terminate()
 
 
 if __name__ == '__main__':
     harness = PerfHarness()
     try:
         harness.main()
     except (KeyboardInterrupt, SystemExit):
         pass
     finally:
         harness.shutdown()