Add Dart code to diff_view

pkg/compiler/lib/src/ssa/builder.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.
 
 part of ssa;
 
 class SsaFunctionCompiler implements FunctionCompiler {
   final SsaCodeGeneratorTask generator;
   final SsaBuilderTask builder;
   final SsaOptimizerTask optimizer;
@@ skipping 1091 matching lines @@
       this.infoReporter = backend.compiler.dumpInfoTask,
       this.backend = backend,
       this.constantSystem = backend.constantSystem,
       this.rti = backend.rti {
     assert(target.isImplementation);
     graph.element = target;
     localsHandler = new LocalsHandler(this, target, null);
     sourceElementStack.add(target);
     sourceInformationBuilder = sourceInformationFactory.createBuilderForContext(
             target);
+    graph.sourceInformation =
+        sourceInformationBuilder.buildVariableDeclaration();
   }
 
   BackendHelpers get helpers => backend.helpers;
 
   RuntimeTypesEncoder get rtiEncoder => backend.rtiEncoder;
 
   DiagnosticReporter get reporter => compiler.reporter;
 
   CoreClasses get coreClasses => compiler.coreClasses;
 
@@ skipping 8106 matching lines @@
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     JavaScriptBackend backend = builder.compiler.backend;
     ClassElement cls = backend.helpers.DynamicRuntimeType;
     builder.push(new HDynamicType(type, new TypeMask.exact(cls, classWorld)));
   }
 }