The action will copy the ASan dynamic runtime to the output dir and into every
bundled executable being built.
Unlike the previous change, this one does not touch build/all.gyp, since our target
doesn't need to be built when building 'All'.
BUG=170629
TBR=thakis,mark
Review URL: https://codereview.chromium.org/12685006
git-svn-id: http://src.chromium.org/svn/trunk/src/build@187566 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
3920cdb878