Run dartfmt on all files under runtime.

runtime/lib/internal_patch.dart

Index: runtime/lib/internal_patch.dart
diff --git a/runtime/lib/internal_patch.dart b/runtime/lib/internal_patch.dart
index b7168750ddf423c5fb3703065872bffef1ed4e5a..cddf30ad4262172b81561cfa97effbde80317766 100644
--- a/runtime/lib/internal_patch.dart
+++ b/runtime/lib/internal_patch.dart
@@ -4,10 +4,12 @@
 
 import 'dart:core' hide Symbol;
 
-@patch List makeListFixedLength(List growableList)
+@patch
+List makeListFixedLength(List growableList)
     native "Internal_makeListFixedLength";
 
-@patch List makeFixedListUnmodifiable(List fixedLengthList)
+@patch
+List makeFixedListUnmodifiable(List fixedLengthList)
     native "Internal_makeFixedListUnmodifiable";
 
 class VMLibraryHooks {
@@ -48,11 +50,11 @@ bool _classRangeCheckNegative(int cid, int lowerLimit, int upperLimit) {
 
 // Utility class now only used by the VM.
 class Lists {
-  static void copy(List src, int srcStart,
-                   List dst, int dstStart, int count) {
+  static void copy(List src, int srcStart, List dst, int dstStart, int count) {
     if (srcStart < dstStart) {
       for (int i = srcStart + count - 1, j = dstStart + count - 1;
-           i >= srcStart; i--, j--) {
+          i >= srcStart;
+          i--, j--) {
         dst[j] = src[i];
       }
     } else {