Run formatter on a few frontend and kernel files that hadn't been formatted.

pkg/kernel/lib/clone.dart

Index: pkg/kernel/lib/clone.dart
diff --git a/pkg/kernel/lib/clone.dart b/pkg/kernel/lib/clone.dart
index 7bd4f6d0ea10abba4ecc2ad1f47cdfc2d64b4ecc..a0db5fa2b2ac1703d1a2a5aef1e2821924dab7f2 100644
--- a/pkg/kernel/lib/clone.dart
+++ b/pkg/kernel/lib/clone.dart
@@ -360,7 +360,8 @@ class CloneVisitor extends TreeVisitor {
         isExternal: node.isExternal,
         isConst: node.isConst,
         transformerFlags: node.transformerFlags,
-        fileUri: node.fileUri)..fileEndOffset = node.fileEndOffset;
+        fileUri: node.fileUri)
+      ..fileEndOffset = node.fileEndOffset;
   }
 
   visitField(Field node) {
@@ -373,7 +374,8 @@ class CloneVisitor extends TreeVisitor {
         hasImplicitGetter: node.hasImplicitGetter,
         hasImplicitSetter: node.hasImplicitSetter,
         transformerFlags: node.transformerFlags,
-        fileUri: node.fileUri)..fileEndOffset = node.fileEndOffset;
+        fileUri: node.fileUri)
+      ..fileEndOffset = node.fileEndOffset;
   }
 
   visitTypeParameter(TypeParameter node) {