Rewrite scoped_ptr<T>(NULL) to use the default ctor.

This is the result of running the rewrite_scoped_ptr_ctor_null tool
across all files built on Mac.

BUG=173286
R=tapted@chromium.org, wez@chromium.org

Review URL: https://codereview.chromium.org/16844021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@206406 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed