Rename KernelElementAdapter and element_adapter.dart to IrToElementMap and ir_map.dart

pkg/compiler/lib/src/kernel/element_map.dart

Index: pkg/compiler/lib/src/kernel/element_map.dart
diff --git a/pkg/compiler/lib/src/kernel/element_map.dart b/pkg/compiler/lib/src/kernel/element_map.dart
index e2ae7c741fde6414d3f1967f441bb4f4988b7836..cc0e7e35a9101b7f23d6236d283a4cdb0658b411 100644
--- a/pkg/compiler/lib/src/kernel/element_map.dart
+++ b/pkg/compiler/lib/src/kernel/element_map.dart
@@ -31,7 +31,7 @@ import '../ssa/kernel_impact.dart';
 import '../universe/call_structure.dart';
 import '../universe/world_builder.dart';
 import '../util/util.dart' show Link, LinkBuilder;
-import 'element_adapter.dart';
+import 'ir_element_map.dart';
 import 'elements.dart';
 
 part 'native_basic_data.dart';
@@ -40,7 +40,7 @@ part 'types.dart';
 
 /// Element builder used for creating elements and types corresponding to Kernel
 /// IR nodes.
-class KernelToElementMap extends KernelElementAdapterMixin {
+class KernelToElementMap extends IrToElementMapMixin {

[Siggi Cherem (dart-lang), 2017/05/05 18:04:21]

so far we use "Kernel" to refer to the Ir everywhere, so how about this:
- IrToElementMap => KernelToElementMap
- IrToElementMapMixin => KernelToElementMapMixin
- KernelToElementMap (this class) => KernelToElementMapImpl

[Johnni Winther, 2017/05/08 08:39:00]

I like that. Adding Impl also indicates that it should not be used as an
interface.

   final Environment _environment;
   CommonElements _commonElements;
   native.BehaviorBuilder _nativeBehaviorBuilder;