win: Delete the pdb before linking an exe for official

build/toolchain/win/tool_wrapper.py

 # Copyright (c) 2012 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.
 
 """Utility functions for Windows builds.
 
 This file is copied to the build directory as part of toolchain setup and
 is used to set up calls to tools used by the build that need wrappers.
 """
 
@@ skipping 67 matching lines @@
     # and msvs_emulation for details). We convert to a dict here.
     # Drop last 2 NULs, one for list terminator, one for trailing vs. separator.
     pairs = open(arch).read()[:-2].split('\0')
     kvs = [item.split('=', 1) for item in pairs]
     return dict(kvs)
 
   def ExecStamp(self, path):
     """Simple stamp command."""
     open(path, 'w').close()
 
+  def ExecDeleteFile(self, path):
+    """Simple file delete command."""
+    if os.path.exists(path):
+      os.unlink(path)
+
   def ExecRecursiveMirror(self, source, dest):
     """Emulation of rm -rf out && cp -af in out."""
     if os.path.exists(dest):
       if os.path.isdir(dest):
         def _on_error(fn, path, dummy_excinfo):
           # The operation failed, possibly because the file is set to
           # read-only. If that's why, make it writable and try the op again.
           if not os.access(path, os.W_OK):
             os.chmod(path, stat.S_IWRITE)
           fn(path)
@@ skipping 217 matching lines @@
     project_dir = os.path.relpath(project_dir, BASE_DIR)
     selected_files = selected_files.split(';')
     ninja_targets = [os.path.join(project_dir, filename) + '^^'
         for filename in selected_files]
     cmd = ['ninja.exe']
     cmd.extend(ninja_targets)
     return subprocess.call(cmd, shell=True, cwd=BASE_DIR)
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))