win: Don't try to inherit console handles in StartHandler()
win: Don't try to inherit console handles in StartHandler()

FILE_TYPE_CHAR handles can't be inherited via
PROC_THREAD_ATTRIBUTE_HANDLE_LIST, or CreateProcess() fails with
GetLastError() == 1450 on Windows 7.

I confirmed that an fprintf(stderr, ...) in HandlerMain() does make it
to the console when running tests even after this.

See bug for more discussion.

R=mark@chromium.org
BUG=crashpad:77

Review URL: https://codereview.chromium.org/1473793002 .

chromium/crashpad,chromium/crashpad,chromium/crashpad,atom/crashpad,atom/crashpad,atom/crashpad