Add isParameter, change isField to isVariable on MemberMirror

sdk/lib/_internal/dartdoc/lib/mirrors.dart

Index: sdk/lib/_internal/dartdoc/lib/mirrors.dart
diff --git a/sdk/lib/_internal/dartdoc/lib/mirrors.dart b/sdk/lib/_internal/dartdoc/lib/mirrors.dart
index d29064d6a11e9ee825108ff808fc8a42a7a71dfe..c9f1d82d0894299bf6a60db6a7b83583fb3da17d 100644
--- a/sdk/lib/_internal/dartdoc/lib/mirrors.dart
+++ b/sdk/lib/_internal/dartdoc/lib/mirrors.dart
@@ -401,24 +401,33 @@ abstract class TypedefMirror implements ClassMirror {
  */
 abstract class MemberMirror implements DeclarationMirror {
   /**
-   * Returns true if this member is a constructor.
+   * Is this member a constructor?
    */
   bool get isConstructor;
 
   /**
-   * Returns true if this member is a field.
+   * Is this member a variable?
+   *
+   * This is [:false:] for locals.
    */
-  bool get isField;
+  bool get isVariable;
 
   /**
-   * Returns true if this member is a method.
+   * Is this member a method?.
+   *
+   * This is [:false:] for constructors.
    */
   bool get isMethod;
 
   /**
-   * Returns true if this member is static.
+   * Is this member declared static?
    */
   bool get isStatic;
+
+  /**
+   * Is this member a parameter?
+   */
+  bool get isParameter;
 }
 
 /**