Fixing annotator timing bug.
Fixing annotator timing bug.

The annotator has been counting time from the begining of the _entire_
annotation step, instead of just the current phase.
This results in bogus stage time values.

BUG=None
TEST=None
R=cmp@chromium.org

Review URL: http://codereview.chromium.org/9700034

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@126747 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build