fix doc comments in dart:io and collection types

sdk/lib/collection/queue.dart

Index: sdk/lib/collection/queue.dart
diff --git a/sdk/lib/collection/queue.dart b/sdk/lib/collection/queue.dart
index 0347943a0ab932c4f0c98b6004dda34d6537ce79..71359b39f2568d637b2df0cc90868a10bd06b06d 100644
--- a/sdk/lib/collection/queue.dart
+++ b/sdk/lib/collection/queue.dart
@@ -557,10 +557,10 @@ class ListQueue<E> extends ListIterable<E> implements Queue<E> {
 
   Iterator<E> get iterator => new _ListQueueIterator<E>(this);
 
-  void forEach(void action(E element)) {
+  void forEach(void f(E element)) {

[Lasse Reichstein Nielsen, 2017/05/31 12:30:22]

I'd actually prefer to change the original to "action" instead.

     int modificationCount = _modificationCount;
     for (int i = _head; i != _tail; i = (i + 1) & (_table.length - 1)) {
-      action(_table[i]);
+      f(_table[i]);
       _checkModification(modificationCount);
     }
   }