Cleanup: Remove unneeded scoped_ptr.h includes from content.

BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10389164

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137637 0039d316-1c4b-4281-b951-d872f2087c98
25 files changed