Rename CastException to CastError.

runtime/lib/error.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Errors are created and thrown by DartVM only.
 // Changes here should also be reflected in corelib/error.dart as well
 
 class AssertionErrorImplementation implements AssertionError {
   factory AssertionErrorImplementation._uninstantiable() {
     throw const UnsupportedOperationException(
         "AssertionError can only be allocated by the VM");
@@ skipping 32 matching lines @@
       str = "${str}malformed type used.";
     }
     return str;
   }
   final String srcType;
   final String dstType;
   final String dstName;
   final String malformedError;
 }
 
-class CastExceptionImplementation
+class CastErrorImplementation
     extends TypeErrorImplementation
-    implements CastException {
-  factory CastException._uninstantiable() {
+    implements CastError {
+  factory CastError._uninstantiable() {
     throw const UnsupportedOperationException(
-        "CastException can only be allocated by the VM");
+        "CastError can only be allocated by the VM");
   }
-  // A CastException is allocated by TypeError._throwNew() when dst_name equals
-  // Exceptions::kCastExceptionDstName.
+  // A CastError is allocated by TypeError._throwNew() when dst_name equals
+  // Exceptions::kCastErrorDstName.
   String toString() {
     String str = (malformedError != null) ? malformedError : "";
     if ((dstName != null) && (dstName.length > 0)) {
       str = "${str}type '$srcType' is not a subtype of "
             "type '$dstType' in type cast.";
     } else {
       str = "${str}malformed type used in type cast.";
     }
     return str;
   }
@@ skipping 50 matching lines @@
 
   String toString() {
     return "Cannot instantiate abstract class $className: "
            "url '$url' line $line";
   }
 
   final String className;
   final String url;
   final int line;
 }