Adapt a function in ProfileSyncServiceMock to again match the parent class's signature.
Adapt a function in ProfileSyncServiceMock to again match the parent class's signature.

BUG=72154
TEST=none

Review URL: http://codereview.chromium.org/6480026

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@74436 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser