Sharing of sources for corelib date implementation between VM and

lib/compiler/implementation/lib/coreimpl.dartp

Index: lib/compiler/implementation/lib/coreimpl.dartp
diff --git a/lib/compiler/implementation/lib/coreimpl.dartp b/lib/compiler/implementation/lib/coreimpl.dartp
index a906769f28eaa6e05966cafba8c1b68f10393791..da8aff799986059d0c83833e5b54b26ce13e251a 100644
--- a/lib/compiler/implementation/lib/coreimpl.dartp
+++ b/lib/compiler/implementation/lib/coreimpl.dartp
@@ -25,6 +25,13 @@ patch class DateImplementation {
     Primitives.lazyAsJsDate(this);
   }
 
+  patch static int _brokenDownDateToMillisecondsSinceEpoch(
+      int years, int month, int day, int hour, int minute, int second,
+      int millisecond, bool isUtc) {
+    return Primitives.valueFromDecomposedDate(
+        years, month, day, hour, minute, second, millisecond, isUtc);
+  }
+
   patch String get timeZoneName() {
     if (isUtc) return "UTC";
     return Primitives.getTimeZoneName(this);