[chromium] refactor npapi plugin copy step
Created attachment 61869 [details] Patch
This depends on http://codereview.chromium.org/2825055/show so will also need a DEPS roll.
Attachment 61869 [details] did not build on chromium: Build output: http://webkit-commit-queue.appspot.com/results/3564091
Created attachment 61918 [details] Patch
Committed r63676: <http://trac.webkit.org/changeset/63676>