[Chrome OS] Log and handle cryptohomed callbacks for calls we didn't initiate
[Chrome OS] Log and handle cryptohomed callbacks for calls we didn't initiate

BUG=chromium-os:7038
TEST=unit tests, install on device and test for crashes on "full sync" after PW change

Review URL: http://codereview.chromium.org/3443029

git-svn-id: http://src.chromium.org/svn/trunk/src@61516 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3608739cf2d0e380070da84a431ff673d0e98566
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser