Rewrite scoped_array<T> to scoped_ptr<T[]> in sandbox.

This is a manual cleanup pass using sed for files which are not built on
Linux.

BUG=171111

Review URL: https://chromiumcodereview.appspot.com/13888007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194027 0039d316-1c4b-4281-b951-d872f2087c98