Fix ui_tests under Dr. Memory on the bot - use an absolute path for the browser wrapper

tools/valgrind/valgrind_test.py

 #!/usr/bin/python
 # Copyright (c) 2011 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.
 
 # valgrind_test.py
 
 """Runs an exe through Valgrind and puts the intermediate files in a
 directory.
 """
@@ skipping 862 matching lines @@
     if not self.handle_uninits_and_leaks:
       proc += ["-no_check_uninitialized", "-no_count_leaks"]
 
     proc += self._tool_flags
 
     # Dr.Memory requires -- to separate tool flags from the executable name.
     proc += ["--"]
 
     if self._options.indirect:
       # TODO(timurrrr): reuse for TSan on Windows
-      self.CreateBrowserWrapper(" ".join(
-            ["python", "tools/valgrind/browser_wrapper_win.py"] + proc))
+      wrapper_path = os.path.join(self._source_dir,
+                                  "tools", "valgrind", "browser_wrapper_win.py")
+      self.CreateBrowserWrapper(" ".join(["python", wrapper_path] + proc))
       proc = []
 
     # Note that self._args begins with the name of the exe to be run.
     self._args[0] = common.NormalizeWindowsPath(self._args[0])
     proc += self._args
     return proc
 
   def CreateBrowserWrapper(self, command):
     os.putenv("BROWSER_WRAPPER", command)
 
@@ skipping 290 matching lines @@
       platform_name = sys.platform + "(Unknown)"
     raise RuntimeError, "Unknown tool (tool=%s, platform=%s)" % (tool_name,
                                                                  platform_name)
 
 def CreateTool(tool):
   return ToolFactory().Create(tool)
 
 if __name__ == '__main__':
   logging.error(sys.argv[0] + " can not be run from command line")
   sys.exit(1)