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

This is a manual cleanup of call sites that invoke scoped_ptr<T>'s
constructor with an explicit NULL argument, since the clang tooling
infrastructure does not work on Windows. Also fixes a misuse of
scoped_ptr<T> in chrome_frame to hold memory allocated by operator
new[].

BUG=173286
R=alexeypa@chromium.org, erg@chromium.org, jochen@chromium.org, mmenke@chromium.org, tommi@chromium.org

Review URL: https://codereview.chromium.org/16943003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@206763 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed