Rename BadNumberFormatException -> FormatException.

corelib/unified/math/base.dart

Index: corelib/unified/math/base.dart
diff --git a/corelib/unified/math/base.dart b/corelib/unified/math/base.dart
index 75696e842aafc879eb264a9c3482842a095bd88a..8452f8fdf9b8d8065337b3122ced830d3d1d0872 100644
--- a/corelib/unified/math/base.dart
+++ b/corelib/unified/math/base.dart
@@ -45,16 +45,14 @@ final double SQRT1_2 = 0.7071067811865476;
 final double SQRT2 = 1.4142135623730951;
 
 /**
- * Parses a [String] representation of an [int], and returns
- * an [int]. Throws a [BadNumberFormatException] if [str]
- * cannot be parsed as an [int].
+ * Parses a [String] representation of an [int], and returns an [int]. Throws a
+ * [FormatException] if [str] cannot be parsed as an [int].
  */
 external int parseInt(String str);
 
 /**
- * Parses a [String] representation of a [double], and returns
- * a [double]. Throws a [BadNumberFormatException] if [str] cannot
- * be parsed as a [double].
+ * Parses a [String] representation of a [double], and returns a [double].
+ * Throws a [FormatException] if [str] cannot be parsed as a [double].
  */
 external double parseDouble(String str);