Add source information to variable declarations in CPS.

pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart

 // Copyright (c) 2013, 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 dart2js.ir_builder;
 
 import '../closure.dart' as closure;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 837 matching lines @@
     add(new ir.InvokeContinuation(state.returnContinuation, [constant]));
     _current = null;
   }
 
   /// Create a [ir.FunctionDefinition] using [root] as the body.
   ///
   /// The protocol for building a function is:
   /// 1. Call [buildFunctionHeader].
   /// 2. Call `buildXXX` methods to build the body.
   /// 3. Call [makeFunctionDefinition] to finish.
-  ir.FunctionDefinition makeFunctionDefinition() {
+  ir.FunctionDefinition makeFunctionDefinition(
+      SourceInformation sourceInformation) {
     _ensureReturn();
     return new ir.FunctionDefinition(
         state.currentElement,
         state.thisParameter,
         state.functionParameters,
         state.returnContinuation,
-        root);
+        root,
+        sourceInformation: sourceInformation);
   }
 
   /// Create a invocation of the [method] on the super class where the call
   /// structure is defined [callStructure] and the argument values are defined
   /// by [arguments].
   ir.Primitive buildSuperMethodInvocation(
       MethodElement method,
       CallStructure callStructure,
       List<ir.Primitive> arguments,
       {SourceInformation sourceInformation}) {
@@ skipping 2061 matching lines @@
                    this.stackTraceVariable,
                    this.buildCatchBlock});
 }
 
 class SwitchCaseInfo {
   final SubbuildFunction buildCondition;
   final SubbuildFunction buildBody;
 
   SwitchCaseInfo(this.buildCondition, this.buildBody);
 }