Move vm constants into their own file. This will make it easier to share these constants.

lib/cros_vm_lib.sh

Index: lib/cros_vm_lib.sh
diff --git a/lib/cros_vm_lib.sh b/lib/cros_vm_lib.sh
index 61d575bfff6bd4b9197f230d8e07163e30547670..c47d11de33bb01c4375dbbab6a0a02b0559f6ac8 100644
--- a/lib/cros_vm_lib.sh
+++ b/lib/cros_vm_lib.sh
@@ -4,6 +4,8 @@
 #
 # Common vm functions for use in crosutils.
 
+. "$(dirname "$0")/cros_vm_constants.sh"
+
 DEFINE_string kvm_pid "" \
   "Use this pid file.  If it exists and is set, use the vm specified by pid."
 DEFINE_boolean no_graphics ${FLAGS_FALSE} "Runs the KVM instance silently."
@@ -11,7 +13,6 @@ DEFINE_boolean persist "${FLAGS_FALSE}" "Persist vm."
 DEFINE_boolean snapshot ${FLAGS_FALSE} "Don't commit changes to image."
 DEFINE_integer ssh_port 9222 "Port to tunnel ssh traffic over."
 
-
 KVM_PID_FILE=/tmp/kvm.$$.pid
 
 function get_pid() {
@@ -47,7 +48,7 @@ function start_kvm() {
       snapshot="-snapshot"
     fi
 
-    sudo kvm -m 1024 \
+    sudo kvm -m ${DEFAULT_MEM} \
       -vga std \
       -pidfile "${KVM_PID_FILE}" \
       -daemonize \