Refactor plugin process code in the browser process so that the browser/about:memory/task manager/metrics code doesn't depend on PluginProcessHost pointers.  In a future changelist I'll add one central child process registry in the browser process.
Review URL: http://codereview.chromium.org/20196

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9621 0039d316-1c4b-4281-b951-d872f2087c98
27 files changed