Add isolate for content_browsertests with --site-per-process.

tools/mb/mb.py

 #!/usr/bin/env python
 # 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.
 
 """MB - the Meta-Build wrapper around GYP and GN
 
 MB is a wrapper script for GYP and GN that can be used to generate build files
 for sets of canned configurations and analyze them.
 """
@@ skipping 517 matching lines @@
     ret, _, _ = self.Run(cmd)
     if ret:
         # If `gn gen` failed, we should exit early rather than trying to
         # generate isolates. Run() will have already logged any error output.
         self.Print('GN gen failed: %d' % ret)
         return ret
 
     for target in swarming_targets:
       if gn_isolate_map[target]['type'] == 'gpu_browser_test':
         runtime_deps_target = 'browser_tests'
-      elif gn_isolate_map[target]['type'] == 'script':
+      elif (gn_isolate_map[target]['type'] == 'script' or
+            gn_isolate_map[target].get('label_type') == 'group'):
         # For script targets, the build target is usually a group,
         # for which gn generates the runtime_deps next to the stamp file
         # for the label, which lives under the obj/ directory.
         label = gn_isolate_map[target]['label']
         runtime_deps_target = 'obj/%s.stamp' % label.replace(':', '/')
       else:
         runtime_deps_target = target
       if self.platform == 'win32':
         deps_path = self.ToAbsPath(build_dir,
                                    runtime_deps_target + '.exe.runtime_deps')
@@ skipping 177 matching lines @@
           '--test-launcher-jobs=1',
           '--gtest_filter=%s' % gtest_filter,
       ]
     elif test_type == 'script':
       extra_files = [
           '../../testing/test_env.py'
       ]
       cmdline = [
           '../../testing/test_env.py',
           '../../' + self.ToSrcRelPath(gn_isolate_map[target]['script'])
-      ] + gn_isolate_map[target].get('args', [])
+      ]
     elif test_type in ('raw'):
       extra_files = []
       cmdline = [
           './' + str(target) + executable_suffix,
-      ] + gn_isolate_map[target].get('args')
+      ]
 
     else:
       self.WriteFailureAndRaise('No command line for %s found (test type %s).'
                                 % (target, test_type), output_path=None)
 
+    cmdline += gn_isolate_map[target].get('args', [])
+
     return cmdline, extra_files
 
   def ToAbsPath(self, build_path, *comps):
     return self.PathJoin(self.chromium_src_dir,
                          self.ToSrcRelPath(build_path),
                          *comps)
 
   def ToSrcRelPath(self, path):
     """Returns a relative path from the top of the repo."""
     # TODO: Support normal paths in addition to source-absolute paths.
@@ skipping 329 matching lines @@
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv[1:]))
   except MBErr as e:
     print(e)
     sys.exit(1)
   except KeyboardInterrupt:
     print("interrupted, exiting", stream=sys.stderr)
     sys.exit(130)