Add LibraryMirror.declarations and ClassMirror.declarations to the API and both implementations.

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 8ae0e48ebddda3f36b530a17f8f8701b0e078403..3cc7cac603d393f3e619b206cd93f474c66fb924 100644
--- a/runtime/lib/mirrors_impl.dart
+++ b/runtime/lib/mirrors_impl.dart
@@ -593,6 +593,17 @@ class _LocalClassMirrorImpl extends _LocalObjectMirrorImpl
     return _mixin;
   }
 
+  Map<Symbol, DeclarationMirror> _declarations;
+  Map<Symbol, DeclarationMirror> get declarations {
+    if (_declarations != null) return _declarations;
+    var decls = new Map<Symbol, DeclarationMirror>();
+    decls.addAll(members);
+    decls.addAll(constructors);
+    typeVariables.forEach((tv) => decls[tv.simpleName] = tv);
+    return _declarations =
+        new _UnmodifiableMapView<Symbol, DeclarationMirror>(decls);
+  }
+
   Map<Symbol, Mirror> _members;
   Map<Symbol, Mirror> get members {
     if (_members == null) {
@@ -913,6 +924,7 @@ class _LocalTypeVariableMirrorImpl extends _LocalDeclarationMirrorImpl
   }
 
   bool get isPrivate => false;
+  bool get isStatic => false;
 
   final bool isTopLevel = false;
 
@@ -1100,6 +1112,13 @@ class _LocalLibraryMirrorImpl extends _LocalObjectMirrorImpl
 
   final Uri uri;
 
+  Map<Symbol, DeclarationMirror> _declarations;
+  Map<Symbol, DeclarationMirror> get declarations {
+    if (_declarations != null) return _declarations;
+    return _declarations =
+        new _UnmodifiableMapView<Symbol, DeclarationMirror>(members);
+  }
+
   Map<Symbol, Mirror> _members;
   Map<Symbol, Mirror> get members {
     if (_members == null) {
@@ -1265,7 +1284,7 @@ class _LocalMethodMirrorImpl extends _LocalDeclarationMirrorImpl
       if (!isConstructor) {
         _constructorName = _s('');
       } else {
-        var parts = _n(simpleName).split('.');
+        var parts = MirrorSystem.getName(simpleName).split('.');
         if (parts.length > 2) {
           throw new MirrorException(
               'Internal error in MethodMirror.constructorName: '