Hopefully the last bit of restructuring between closture classes and loop boxing, etc.

pkg/compiler/lib/src/ssa/loop_handler.dart

Index: pkg/compiler/lib/src/ssa/loop_handler.dart
diff --git a/pkg/compiler/lib/src/ssa/loop_handler.dart b/pkg/compiler/lib/src/ssa/loop_handler.dart
index 3ce6289a64c72e941825603a16b4263758f88f0e..338e7f97747d7f5349569c7de66ebd5b7a44f831 100644
--- a/pkg/compiler/lib/src/ssa/loop_handler.dart
+++ b/pkg/compiler/lib/src/ssa/loop_handler.dart
@@ -4,7 +4,7 @@
 
 import 'package:kernel/ast.dart' as ir;
 
-import '../closure.dart' show LoopClosureRepresentationInfo;
+import '../closure.dart' show ClosureBase;
 import '../elements/jumps.dart';
 import '../io/source_information.dart';
 import '../tree/tree.dart' as ast;
@@ -28,8 +28,8 @@ abstract class LoopHandler<T> {
   /// For while loops, [initialize] and [update] are null.
   /// The [condition] function must return a boolean result.
   /// None of the functions must leave anything on the stack.
-  void handleLoop(T loop, LoopClosureRepresentationInfo loopClosureInfo,
-      void initialize(), HInstruction condition(), void update(), void body()) {
+  void handleLoop(T loop, ClosureBase loopClosureInfo, void initialize(),
+      HInstruction condition(), void update(), void body()) {
     // Generate:
     //  <initializer>
     //  loop-entry: