Makes mojob create a different directory when --asan is specified

mojo/tools/mopy/paths.py

 # 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
 
 from .config import Config
 
 class Paths(object):
   """Provides commonly used paths"""
 
   def __init__(self, config=None, build_dir=None):
     """Specify either a config or a build_dir to generate paths to binary
     artifacts."""
     self.src_root = os.path.abspath(os.path.join(__file__,
       os.pardir, os.pardir, os.pardir, os.pardir))
     self.mojo_dir = os.path.join(self.src_root, "mojo")
 
     if config:
       assert build_dir is None
       subdir = ""
       if config.target_os == Config.OS_ANDROID:
         subdir += "android_"
       elif config.target_os == Config.OS_CHROMEOS:
         subdir += "chromeos_"
       subdir += "Debug" if config.is_debug else "Release"
+      if config.sanitizer == Config.SANITIZER_ASAN:
+        subdir += "_asan"
       self.build_dir = os.path.join(self.src_root, "out", subdir)
     elif build_dir is not None:
       self.build_dir = os.path.abspath(build_dir)
     else:
       self.build_dir = None
 
     if self.build_dir is not None:
       self.mojo_shell_path = os.path.join(self.build_dir, "mojo_shell")
       # TODO(vtl): Use the host OS here, since |config| may not be available.
       # In any case, if the target is Windows, but the host isn't, using
       # |os.path| isn't correct....
       if Config.GetHostOS() == Config.OS_WINDOWS:
         self.mojo_shell_path += ".exe"
     else:
       self.mojo_shell_path = None
 
   def RelPath(self, path):
     """Returns the given path, relative to the current directory."""
     return os.path.relpath(path)
 
   def SrcRelPath(self, path):
     """Returns the given path, relative to self.src_root."""
     return os.path.relpath(path, self.src_root)