Reformat code to reduce churn

pkg/analyzer/lib/src/generated/visitors.dart

 // Copyright (c) 2015, 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.
 
 library engine.ast.visitors;
 
 import 'package:analyzer/src/generated/ast.dart';
 
 /// An [AstVisitor] that delegates calls to visit methods to all [delegates]
 /// before calling [visitChildren].
@@ skipping 285 matching lines @@
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitFormalParameterList(FormalParameterList node) {
     _delegates.forEach((delegate) => delegate.visitFormalParameterList(node));
     node.visitChildren(this);
     return null;
   }
+
   @override
   T visitFunctionDeclaration(FunctionDeclaration node) {
     _delegates.forEach((delegate) => delegate.visitFunctionDeclaration(node));
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     _delegates.forEach(
@@ skipping 152 matching lines @@
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitMethodDeclaration(MethodDeclaration node) {
     _delegates.forEach((delegate) => delegate.visitMethodDeclaration(node));
     node.visitChildren(this);
     return null;
   }
+
   @override
   T visitMethodInvocation(MethodInvocation node) {
     _delegates.forEach((delegate) => delegate.visitMethodInvocation(node));
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitNamedExpression(NamedExpression node) {
     _delegates.forEach((delegate) => delegate.visitNamedExpression(node));
@@ skipping 50 matching lines @@
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitPrefixExpression(PrefixExpression node) {
     _delegates.forEach((delegate) => delegate.visitPrefixExpression(node));
     node.visitChildren(this);
     return null;
   }
+
   @override
   T visitPrefixedIdentifier(PrefixedIdentifier node) {
     _delegates.forEach((delegate) => delegate.visitPrefixedIdentifier(node));
     node.visitChildren(this);
     return null;
   }
 
   @override
   T visitPropertyAccess(PropertyAccess node) {
     _delegates.forEach((delegate) => delegate.visitPropertyAccess(node));
@@ skipping 203 matching lines @@
     return null;
   }
 
   @override
   T visitYieldStatement(YieldStatement node) {
     _delegates.forEach((delegate) => delegate.visitYieldStatement(node));
     node.visitChildren(this);
     return null;
   }
 }