Update the path to generate_breakpad_symbols.py

It was moved in https://crrev.com/55b8563

git grep 'components.*breakpad' did not find any other instances.

BUG=406410
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/512213002

git-svn-id: svn://svn.chromium.org/blink/trunk@181041 bbb929c8-8fbe-4397-9dbb-9b2b20218538