Revert "Move dart2js from sdk/lib/_internal/compiler to pkg/compiler"

tests/compiler/dart2js/parser_helper.dart

Index: tests/compiler/dart2js/parser_helper.dart
diff --git a/tests/compiler/dart2js/parser_helper.dart b/tests/compiler/dart2js/parser_helper.dart
index c7678a424c278b1df61982d641907a7588ab62eb..1c27681e8cef2d118336dbfcd20dae53fdb28943 100644
--- a/tests/compiler/dart2js/parser_helper.dart
+++ b/tests/compiler/dart2js/parser_helper.dart
@@ -6,21 +6,21 @@ library parser_helper;
 
 import "package:expect/expect.dart";
 
-import "package:compiler/src/elements/elements.dart";
-import "package:compiler/src/tree/tree.dart";
-import "package:compiler/src/scanner/scannerlib.dart";
-import "package:compiler/src/source_file.dart";
-import "package:compiler/src/util/util.dart";
+import "package:compiler/implementation/elements/elements.dart";
+import "package:compiler/implementation/tree/tree.dart";
+import "package:compiler/implementation/scanner/scannerlib.dart";
+import "package:compiler/implementation/source_file.dart";
+import "package:compiler/implementation/util/util.dart";
 
-import "package:compiler/src/elements/modelx.dart"
+import "package:compiler/implementation/elements/modelx.dart"
     show CompilationUnitElementX, ElementX, LibraryElementX;
 
-import "package:compiler/src/dart2jslib.dart";
+import "package:compiler/implementation/dart2jslib.dart";
 
-export "package:compiler/src/dart2jslib.dart"
+export "package:compiler/implementation/dart2jslib.dart"
     show DiagnosticListener;
 // TODO(ahe): We should have token library to export instead.
-export "package:compiler/src/scanner/scannerlib.dart";
+export "package:compiler/implementation/scanner/scannerlib.dart";
 
 class LoggerCanceler implements DiagnosticListener {
   void cancel(String reason, {node, token, instruction, element}) {