Deprecate Math object in corelib in favor of dart:math library.

lib/compiler/implementation/tree/nodes.dart

Index: lib/compiler/implementation/tree/nodes.dart
diff --git a/lib/compiler/implementation/tree/nodes.dart b/lib/compiler/implementation/tree/nodes.dart
index f73279b0b854b137fd36c40e95f613240f1ec8bb..6cca06cadd6367329d11f574b723a09edb018433 100644
--- a/lib/compiler/implementation/tree/nodes.dart
+++ b/lib/compiler/implementation/tree/nodes.dart
@@ -662,7 +662,7 @@ class LiteralInt extends Literal<int> {
     try {
       Token valueToken = token;
       if (valueToken.kind === PLUS_TOKEN) valueToken = valueToken.next;
-      return Math.parseInt(valueToken.value.slowToString());
+      return parseInt(valueToken.value.slowToString());
     } catch (FormatException ex) {
       (this.handler)(token, ex);
     }
@@ -681,7 +681,7 @@ class LiteralDouble extends Literal<double> {
     try {
       Token valueToken = token;
       if (valueToken.kind === PLUS_TOKEN) valueToken = valueToken.next;
-      return Math.parseDouble(valueToken.value.slowToString());
+      return parseDouble(valueToken.value.slowToString());
     } catch (FormatException ex) {
       (this.handler)(token, ex);
     }