Small refactoring: make the Process* routines return void.

This makes my subsequent change easier: the Process* routines will need to either carry out the task or delegate to an elevated host instance and I want those routines, not the caller, to handle the error condition.

BUG=325567

Review URL: https://codereview.chromium.org/121973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242842 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242842
rAc: bring Android and Desktop into better alignment re: security

1) don't allow the dialog on insecure sites just because it's not asking for CC info (other PII is security-sensitive as well)
2) manage security-based rejection in the same place (should make the override flag work on Android)

BUG=272512

Review URL: https://codereview.chromium.org/120813003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242843 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242843