Reapply "Rename mappedBy to map."

tools/dom/templates/html/impl/impl_Node.darttemplate

Index: tools/dom/templates/html/impl/impl_Node.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Node.darttemplate b/tools/dom/templates/html/impl/impl_Node.darttemplate
index 3e7e7890223c69afd91b2bdf64932fdd58a6dd10..07ef02c1fc0e106199678fd39a9f25e66030f0e8 100644
--- a/tools/dom/templates/html/impl/impl_Node.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Node.darttemplate
@@ -138,6 +138,10 @@ $endif
     return IterableMixinWorkaround.joinList(this, separator);
   }
 
+  Iterable map(f(Node element)) {
+    return IterableMixinWorkaround.map(this, f);
+  }
+
   List mappedBy(f(Node element)) {
     return IterableMixinWorkaround.mappedByList(this, f);
   }
@@ -157,7 +161,7 @@ $endif
 
   // From List<Node>:
 
-  List<Node> take(int n) {
+  Iterable<Node> take(int n) {
     return IterableMixinWorkaround.takeList(this, n);
   }
 
@@ -165,7 +169,7 @@ $endif
     return IterableMixinWorkaround.takeWhile(this, test);
   }
 
-  List<Node> skip(int n) {
+  Iterable<Node> skip(int n) {
     return IterableMixinWorkaround.skipList(this, n);
   }