Late night strong mode cleaning.

tests/compiler/dart2js/source_map_validator_helper.dart

Index: tests/compiler/dart2js/source_map_validator_helper.dart
diff --git a/tests/compiler/dart2js/source_map_validator_helper.dart b/tests/compiler/dart2js/source_map_validator_helper.dart
index 3e24a80f3be1b1feb2e65da55c75480255623cb5..f806b6c43f282dda30f698cfb96a09ea9fa94c11 100644
--- a/tests/compiler/dart2js/source_map_validator_helper.dart
+++ b/tests/compiler/dart2js/source_map_validator_helper.dart
@@ -110,7 +110,8 @@ checkNames(
     });
   }
 
-  compiler.libraryLoader.libraries.forEach((LibraryElement library) {
+  compiler.libraryLoader.libraries.forEach((_library) {
+    LibraryElement library = _library;
     mapCompilationUnits(library);
     if (library.patch != null) {
       mapCompilationUnits(library.patch);
@@ -121,7 +122,6 @@ checkNames(
     for (TargetEntry entry in line.entries) {
       if (entry.sourceNameId != null) {
         Uri uri = mapUri.resolve(sourceMap.urls[entry.sourceUrlId]);
-        Position targetPosition = new Position(line.line, entry.column);
         Position sourcePosition =
             new Position(entry.sourceLine, entry.sourceColumn);
         String name = sourceMap.names[entry.sourceNameId];
@@ -143,8 +143,8 @@ checkNames(
           if (!element.hasNode) return null;
 
           var begin = element.node.getBeginToken().charOffset;
-          var end = element.node.getEndToken();
-          end = end.charOffset + end.charCount;
+          var endToken = element.node.getEndToken();
+          int end = endToken.charOffset + endToken.charCount;
           return new Interval(
               positionFromOffset(begin), positionFromOffset(end));
         }
@@ -161,7 +161,7 @@ checkNames(
 
           if (element is MemberElement) {
             MemberElement member = element;
-            member.nestedClosures.forEach((closure) {
+            member.nestedClosures.forEach((dynamic closure) {
               var localFunction = closure.expression;
               Interval interval = intervalFromElement(localFunction);
               if (interval != null &&
@@ -207,7 +207,7 @@ checkNames(
           }
         }
 
-        compilationUnit.forEachLocalMember((AstElement element) {
+        compilationUnit.forEachLocalMember((Element element) {
           if (element.isClass) {
             ClassElement classElement = element;
             classElement.forEachLocalMember(match);