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

pkg/dartdoc/utils.dart

Index: pkg/dartdoc/utils.dart
diff --git a/pkg/dartdoc/utils.dart b/pkg/dartdoc/utils.dart
index 0bd4164fb558fa3026e1716d3b797a50d40ca132..0922e516bc6f606dbe41f03d6d43824df91b2f0b 100644
--- a/pkg/dartdoc/utils.dart
+++ b/pkg/dartdoc/utils.dart
@@ -38,7 +38,7 @@ String repeat(String text, int count, [String separator]) {
 /** Removes up to [indentation] leading whitespace characters from [text]. */
 String unindent(String text, int indentation) {
   var start;
-  for (start = 0; start < Math.min(indentation, text.length); start++) {
+  for (start = 0; start < min(indentation, text.length); start++) {
     // Stop if we hit a non-whitespace character.
     if (text[start] != ' ') break;
   }