Add List.insert.

sdk/lib/svg/dart2js/svg_dart2js.dart

Index: sdk/lib/svg/dart2js/svg_dart2js.dart
diff --git a/sdk/lib/svg/dart2js/svg_dart2js.dart b/sdk/lib/svg/dart2js/svg_dart2js.dart
index 7e0714362702724b7938b2507697ad9c8992d18b..df581acacbad423434426ab98759cee9805a17cd 100644
--- a/sdk/lib/svg/dart2js/svg_dart2js.dart
+++ b/sdk/lib/svg/dart2js/svg_dart2js.dart
@@ -3187,6 +3187,10 @@ class LengthList implements JavaScriptIndexingBehavior, List<Length> native "*SV
   Length max([int compare(Length a, Length b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, Length element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   Length removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
@@ -3816,6 +3820,10 @@ class NumberList implements JavaScriptIndexingBehavior, List<Number> native "*SV
   Number max([int compare(Number a, Number b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, Number element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   Number removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
@@ -4721,6 +4729,10 @@ class PathSegList implements JavaScriptIndexingBehavior, List<PathSeg> native "*
   PathSeg max([int compare(PathSeg a, PathSeg b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, PathSeg element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   PathSeg removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
@@ -5611,6 +5623,10 @@ class StringList implements JavaScriptIndexingBehavior, List<String> native "*SV
   String max([int compare(String a, String b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, String element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   String removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
@@ -6778,6 +6794,10 @@ class TransformList implements List<Transform>, JavaScriptIndexingBehavior nativ
   Transform max([int compare(Transform a, Transform b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, Transform element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   Transform removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
@@ -7302,6 +7322,10 @@ class _ElementInstanceList implements JavaScriptIndexingBehavior, List<ElementIn
   ElementInstance max([int compare(ElementInstance a, ElementInstance b)]) =>
       IterableMixinWorkaround.max(this, compare);
 
+  void insert(int index, ElementInstance element) {
+    throw new UnsupportedError("Cannot add to immutable List.");
+  }
+
   ElementInstance removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }