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

editor/util/debuggertest/pets.dart

 
 #library("pets");
 
+#import('dart:math');
+
 final num MAX_CATS = 10;
 
 final SPARKY = const Cat("Sparky");
 
 interface Animal {
   bool livesWith(Animal other);
   void performAction();
 }
 
 class Cat implements Animal {
@@ skipping 31 matching lines @@
 
   String name;
 
   bool collar;
 
   int fleaCount;
 
   Date bornOn;
 
   Dog(this.name) {
-    fleaCount = (Math.random() * 10.0).round().toInt();
+    var rand = new Random();
+    fleaCount = rand.nextInt(10);
     bornOn = new Date.now();
   }
 
   Dog.withFleas(this.name, this.fleaCount) {
     bornOn = new Date.now();
   }
 
   bool livesWith(Animal other) => true;
 
   void performAction() {
@@ skipping 25 matching lines @@
   }
 
   return map;
 }
 
 void testInfinity() {
   var infTest = 1 / 0;
 
   print(infTest); // Infinity
 }