Begin moving code generation tools from analysis_server to analyzer.

pkg/analyzer/lib/src/codegen/tools.dart

Index: pkg/analyzer/lib/src/codegen/tools.dart
diff --git a/pkg/analysis_server/tool/spec/codegen_tools.dart b/pkg/analyzer/lib/src/codegen/tools.dart
similarity index 99%
copy from pkg/analysis_server/tool/spec/codegen_tools.dart
copy to pkg/analyzer/lib/src/codegen/tools.dart
index f3fcb5d2524403e1c191a8151225cd04bad40d34..3b2115d91a2ce7b498671fa77216fd722e776d24 100644
--- a/pkg/analysis_server/tool/spec/codegen_tools.dart
+++ b/pkg/analyzer/lib/src/codegen/tools.dart
@@ -3,16 +3,16 @@
 // BSD-style license that can be found in the LICENSE file.
 
 /**
- * Tools for code generation.
+ * Tools for generating code in analyzer and analysis server.
  */
-library codegen.tools;
+library analyzer.src.codegen.tools;
 
 import 'dart:io';
 
 import 'package:html/dom.dart' as dom;
 import 'package:path/path.dart';
 
-import 'html_tools.dart';
+import 'html.dart';
 import 'text_formatter.dart';
 
 final RegExp trailingWhitespaceRegExp = new RegExp(r'[\n ]+$');