Propagate failures from VirtualMemory::Commit.

BUG=23314
R=iposva@google.com

Review URL: https://codereview.chromium.org//1119403003

git-svn-id: https://dart.googlecode.com/svn/trunk@45501 260f80e4-7a28-3924-810f-c04153c831b5
3 files changed
tree: f97a8fd57299d58ddc577b7d825574a8a964e8f8
  1. dart/
  2. deps/