Enable DOM_STORAGE in our build.  Put LocalStorage and SessionStorage behind their own flags.  Add the beginnings of StorageNamespaceProxy since it implements WebCore::StorageNamespace::____StorageNamespace and we'd get link errors otherwise.

--enable-local-storage and --enable-session-storage are the new flags.  If you enable them and try to use DOM Storage, Chromium will crash.

BUG=4360
TEST=none

Review URL: http://codereview.chromium.org/149792

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@21059 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed