Moved some MethodMirror properties from embedded API to native calls.

runtime/lib/mirrors_impl.dart

Index: runtime/lib/mirrors_impl.dart
diff --git a/runtime/lib/mirrors_impl.dart b/runtime/lib/mirrors_impl.dart
index 838af66094bca44edbd6b662882145e3475d349e..d95878edee13a8f6af8ce2cc0eeac10ea1386a20 100644
--- a/runtime/lib/mirrors_impl.dart
+++ b/runtime/lib/mirrors_impl.dart
@@ -867,19 +867,17 @@ class _LocalMethodMirrorImpl extends _LocalMirrorImpl
   _LocalMethodMirrorImpl(this._reflectee,
                          this._owner,
                          this.parameters,
-                         this._returnType,
-                         this.isStatic,
-                         this.isAbstract,
-                         this.isGetter,
-                         this.isSetter,
-                         this.isConstructor,
-                         this.isConstConstructor,
-                         this.isGenerativeConstructor,
-                         this.isRedirectingConstructor,
-                         this.isFactoryConstructor);
+                         this._returnType);
 
   final _MirrorReference _reflectee;
 
+  // Keep in sync with MethodMirrorProperty in mirrors.cc.
+  static const int _propertyIsStatic = 0;
+  static const int _propertyIsAbstract = 1;
+  static const int _propertyIsGetter = 2;
+  static const int _propertyIsSetter = 3;
+  static const int _propertyIsConstructor = 4;
+
   Symbol _simpleName = null;
   Symbol get simpleName {
     if (_simpleName == null) {
@@ -926,8 +924,21 @@ class _LocalMethodMirrorImpl extends _LocalMirrorImpl
 
   final List<ParameterMirror> parameters;
 
-  final bool isStatic;
-  final bool isAbstract;
+  bool _isStatic = null;
+  bool get isStatic {
+    if (_isStatic == null) {
+      _isStatic = _MethodMirror_get_property(_reflectee, _propertyIsStatic);
+    }
+    return _isStatic;
+  }
+
+  bool _isAbstract;
+  bool get isAbstract {
+    if (_isAbstract == null) {
+      _isAbstract = _MethodMirror_get_property(_reflectee, _propertyIsAbstract);
+    }
+    return _isAbstract;
+  }
 
   bool get isRegularMethod => !isGetter && !isSetter && !isConstructor;
 
@@ -936,9 +947,30 @@ class _LocalMethodMirrorImpl extends _LocalMirrorImpl
         'MethodMirror.isOperator is not implemented');
   }
 
-  final bool isGetter;
-  final bool isSetter;
-  final bool isConstructor;
+  bool _isGetter = null;
+  bool get isGetter {
+    if (_isGetter == null) {
+      _isGetter = _MethodMirror_get_property(_reflectee, _propertyIsGetter);
+    }
+    return _isGetter;
+  }
+
+  bool _isSetter = null;
+  bool get isSetter {
+    if (_isSetter == null) {
+      _isSetter = _MethodMirror_get_property(_reflectee, _propertyIsSetter);
+    }
+    return _isSetter;
+  }
+
+  bool _isConstructor = null;
+  bool get isConstructor {
+    if (_isConstructor == null) {
+      _isConstructor = _MethodMirror_get_property(_reflectee,
+                                                  _propertyIsConstructor);
+    }
+    return _isConstructor;
+  }
 
   Symbol _constructorName = null;
   Symbol get constructorName {
@@ -961,10 +993,11 @@ class _LocalMethodMirrorImpl extends _LocalMirrorImpl
     return _constructorName;
   }
 
-  final bool isConstConstructor;
-  final bool isGenerativeConstructor;
-  final bool isRedirectingConstructor;
-  final bool isFactoryConstructor;
+  // TODO(mlippautz): Implement constructor kinds.
+  final bool isConstConstructor = false;
+  final bool isGenerativeConstructor = false;
+  final bool isRedirectingConstructor = false;
+  final bool isFactoryConstructor = false;
 
   List<InstanceMirror> get metadata {
     owner; // ensure owner is computed
@@ -977,6 +1010,9 @@ class _LocalMethodMirrorImpl extends _LocalMirrorImpl
 
   static String _MethodMirror_name(reflectee)
       native "MethodMirror_name";
+
+  static bool _MethodMirror_get_property(reflectee, property)
+      native "MethodMirror_get_property";
 }
 
 class _LocalVariableMirrorImpl extends _LocalMirrorImpl