Fix ddc build_sdk step

pkg/dev_compiler/tool/input_sdk/libraries.dart

 // Copyright (c) 2012, 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 libraries;
 
 /**
  * A bit flag used by [LibraryInfo] indicating that a library is used by dart2js
  */
 const int DART2JS_PLATFORM = 1;
@@ skipping 95 matching lines @@
   "typed_data": const LibraryInfo("typed_data/typed_data.dart",
       categories: "Client,Server,Embedded",
       maturity: Maturity.STABLE,
       dart2jsPatchPath: "_internal/js_runtime/lib/typed_data_patch.dart"),
   "_native_typed_data": const LibraryInfo(
       "_internal/js_runtime/lib/native_typed_data.dart",
       categories: "",
       implementation: true,
       documented: false,
       platforms: DART2JS_PLATFORM),
-  "svg": const LibraryInfo("svg/dart2js/svg_dart2js.dart.dart",
+  "svg": const LibraryInfo("svg/dart2js/svg_dart2js.dart",
       categories: "Client",
       maturity: Maturity.WEB_STABLE,
       platforms: DART2JS_PLATFORM),
   "web_audio": const LibraryInfo("web_audio/dart2js/web_audio_dart2js.dart",
       categories: "Client",
       maturity: Maturity.WEB_STABLE,
       platforms: DART2JS_PLATFORM),
   "web_gl": const LibraryInfo("web_gl/dart2js/web_gl_dart2js.dart",
       categories: "Client",
       maturity: Maturity.WEB_STABLE,
@@ skipping 174 matching lines @@
       "Stable",
       "The library is stable. API backwards-compatibility is guaranteed.\n"
       "However implementation details might change.");
 
   static const Maturity LOCKED = const Maturity(5, "Locked",
       "This library will not change except when serious bugs are encountered.");
 
   static const Maturity UNSPECIFIED = const Maturity(-1, "Unspecified",
       "The maturity for this library has not been specified.");
 }