Rename front end shadow classes from "Kernel..." to "Shadow...".

pkg/front_end/lib/src/fasta/kernel/kernel_procedure_builder.dart

 // Copyright (c) 2016, 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 fasta.kernel_procedure_builder;
 
 import 'package:front_end/src/fasta/type_inference/type_inferrer.dart'
     show TypeInferrer;
 
 import 'package:kernel/ast.dart'
@@ skipping 55 matching lines @@
         KernelFormalParameterBuilder,
         KernelLibraryBuilder,
         KernelTypeBuilder,
         KernelTypeVariableBuilder,
         LibraryBuilder,
         MetadataBuilder,
         ProcedureBuilder,
         TypeVariableBuilder,
         isRedirectingGenerativeConstructorImplementation;
 
-import 'kernel_shadow_ast.dart' show KernelProcedure;
+import 'kernel_shadow_ast.dart' show ShadowProcedure;
 
 abstract class KernelFunctionBuilder
     extends ProcedureBuilder<KernelTypeBuilder> {
   final String nativeMethodName;
 
   FunctionNode function;
 
   Statement actualBody;
 
   KernelFunctionBuilder(
@@ skipping 109 matching lines @@
         ..isConst = true;
     } else {
       annotation = new StaticInvocation(constructor.target, arguments)
         ..isConst = true;
     }
     target.addAnnotation(annotation);
   }
 }
 
 class KernelProcedureBuilder extends KernelFunctionBuilder {
-  final KernelProcedure procedure;
+  final ShadowProcedure procedure;
   final int charOpenParenOffset;
 
   AsyncMarker actualAsyncModifier = AsyncMarker.Sync;
 
   final ConstructorReferenceBuilder redirectionTarget;
 
   KernelProcedureBuilder(
       String documentationComment,
       List<MetadataBuilder> metadata,
       int modifiers,
       KernelTypeBuilder returnType,
       String name,
       List<TypeVariableBuilder> typeVariables,
       List<FormalParameterBuilder> formals,
       ProcedureKind kind,
       KernelLibraryBuilder compilationUnit,
       int charOffset,
       this.charOpenParenOffset,
       int charEndOffset,
       [String nativeMethodName,
       this.redirectionTarget])
-      : procedure = new KernelProcedure(null, kind, null, returnType == null,
+      : procedure = new ShadowProcedure(null, kind, null, returnType == null,
             fileUri: compilationUnit?.relativeFileUri)
           ..fileOffset = charOffset
           ..fileEndOffset = charEndOffset,
         super(
             documentationComment,
             metadata,
             modifiers,
             returnType,
             name,
             typeVariables,
@@ skipping 204 matching lines @@
         }
       }
       initializers.add(initializer..parent = constructor);
       initializers.add(superInitializer);
       return;
     }
     initializers.add(initializer);
     initializer.parent = constructor;
   }
 }