GitLab

Change the status area memory widget to display anonymous memory allocated,
which is a good proxy for "total memory allocated" and what we use in the
UMA histograms (Platform.MemuseAnon[0-5]).  Also display renderer kills, which
will tick up when we run out of memory and the OOM killer starts running.
Refactor GetSystemMemoryInfo to use a struct.

BUG=chromium-os:18969
TEST=manual, turn on memory status widget in about:flags and restart, open some tabs and watch memory consumption increase, use Task Manager / End Process to kill a process and watch the kill count increase

Review URL: http://codereview.chromium.org/7607035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96423 0039d316-1c4b-4281-b951-d872f2087c98