Uncomment and clean up all_the_rest.dart tests.

pkg/analyzer/lib/src/generated/java_core.dart

 library java.core;
 
 import "dart:math" as math;
 
 final Stopwatch nanoTimeStopwatch = new Stopwatch();
 
+const int LONG_MAX_VALUE = 0x7fffffffffffffff;
+
 class JavaSystem {
   static int currentTimeMillis() {
     return (new DateTime.now()).millisecondsSinceEpoch;
   }
 
   static int nanoTime() {
     if (!nanoTimeStopwatch.isRunning) {
       nanoTimeStopwatch.start();
     }
     return nanoTimeStopwatch.elapsedMicroseconds * 1000;
@@ skipping 247 matching lines @@
   }
 
   static String repeat(String s, int n) {
     StringBuffer sb = new StringBuffer();
     for (int i = 0; i < n; i++) {
       sb.write(s);
     }
     return sb.toString();
   }
 
-  static List<String> split(String s, [String pattern = '']) {
+  static List<String> split(String s, [String pattern = ' ']) {
     return s.split(pattern);
   }
 
   static List<String> splitByWholeSeparatorPreserveAllTokens(String s, String
       pattern) {
     return s.split(pattern);
   }
 }
 
 class Math {
@@ skipping 252 matching lines @@
  *     format('{0} are you {1}ing?', ['What', 'read']) = 'What are you reading?'
  */
 String formatList(String pattern, List args) {
   return pattern.replaceAllMapped(new RegExp(r'\{(\d+)\}'), (match) {
     String indexStr = match.group(1);
     int index = int.parse(indexStr);
     var arg = args[index];
     return arg != null ? arg.toString() : null;
   });
 }