Add a ResourceConstraint for the embedder to specify that V8 is running on a memory constrained device.
This enables us to specialize certain operations such that we limit memory
usage on low-memory devices, without reducing performance on devices which
are not memory constrained.
BUG=chromium:280984
R=svenpanne@chromium.org
Review URL: https://codereview.chromium.org/
23464022
Patch from Ross McIlroy <rmcilroy@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16608
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00