change param name to match docs

sdk/lib/core/iterable.dart

Index: sdk/lib/core/iterable.dart
diff --git a/sdk/lib/core/iterable.dart b/sdk/lib/core/iterable.dart
index 3de39bcdc989ef7f2276634bb611b2d33c891c5a..78efa1b5ca5200c8577625ef9dcbc33143d1ee40 100644
--- a/sdk/lib/core/iterable.dart
+++ b/sdk/lib/core/iterable.dart
@@ -392,8 +392,8 @@ abstract class Iterable<E> {
    *
    * The `count` must not be negative.
    */
-  Iterable<E> take(int n) {
-    return new TakeIterable<E>(this, n);
+  Iterable<E> take(int count) {
+    return new TakeIterable<E>(this, count);
   }
 
   /**
@@ -422,8 +422,8 @@ abstract class Iterable<E> {
    *
    * The `count` must not be negative.
    */
-  Iterable<E> skip(int n) {
-    return new SkipIterable<E>(this, n);
+  Iterable<E> skip(int count) {
+    return new SkipIterable<E>(this, count);
   }
 
   /**