Clean up download code:
- move filename generation parts and related code out of DownloadManager
download_util is not the best place for it, but it's better than
DownloadManager which we're trying to minimize
- clean up posting tasks to different threads. There's no need to create
separate methods for that, it was cluttering the file needlessly
- other minor cleanups, like using static_cast instead of C-style cast
TEST=unit_tests, browser_tests, ui_tests
BUG=48913
Review URL: http://codereview.chromium.org/3043048
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55088 0039d316-1c4b-4281-b951-d872f2087c98
13 files changed
