DevTools Heap profiler: implement sorting.
DevTools Heap profiler: implement sorting.

BUG=26319
TEST=none

Review URL: http://codereview.chromium.org/342076

git-svn-id: http://src.chromium.org/svn/trunk/src@30712 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 58219dfe94756cfbc493eda2e5336eae38b6397c
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