Add List.first.

sdk/lib/svg/dartium/svg_dartium.dart

Index: sdk/lib/svg/dartium/svg_dartium.dart
diff --git a/sdk/lib/svg/dartium/svg_dartium.dart b/sdk/lib/svg/dartium/svg_dartium.dart
index f372945c46b34f13b4cdff6e6f9b6fd1ae5b8bf9..9dc79b5b678b338eba5daedfc08a4585240d0305 100644
--- a/sdk/lib/svg/dartium/svg_dartium.dart
+++ b/sdk/lib/svg/dartium/svg_dartium.dart
@@ -498,6 +498,8 @@ class SVGAnimatedLengthList extends NativeFieldWrapperClass1 implements List<SVG
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGAnimatedLength get first => this[0];
+
   SVGAnimatedLength get last => this[length - 1];
 
   SVGAnimatedLength removeLast() {
@@ -625,6 +627,8 @@ class SVGAnimatedNumberList extends NativeFieldWrapperClass1 implements List<SVG
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGAnimatedNumber get first => this[0];
+
   SVGAnimatedNumber get last => this[length - 1];
 
   SVGAnimatedNumber removeLast() {
@@ -792,6 +796,8 @@ class SVGAnimatedTransformList extends NativeFieldWrapperClass1 implements List<
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGAnimateTransformElement get first => this[0];
+
   SVGAnimateTransformElement get last => this[length - 1];
 
   SVGAnimateTransformElement removeLast() {
@@ -3856,6 +3862,8 @@ class SVGLengthList extends NativeFieldWrapperClass1 implements List<SVGLength>
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGLength get first => this[0];
+
   SVGLength get last => this[length - 1];
 
   SVGLength removeLast() {
@@ -4503,6 +4511,8 @@ class SVGNumberList extends NativeFieldWrapperClass1 implements List<SVGNumber>
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGNumber get first => this[0];
+
   SVGNumber get last => this[length - 1];
 
   SVGNumber removeLast() {
@@ -5570,6 +5580,8 @@ class SVGPathSegList extends NativeFieldWrapperClass1 implements List<SVGPathSeg
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGPathSeg get first => this[0];
+
   SVGPathSeg get last => this[length - 1];
 
   SVGPathSeg removeLast() {
@@ -6724,6 +6736,8 @@ class SVGStringList extends NativeFieldWrapperClass1 implements List<String> {
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  String get first => this[0];
+
   String get last => this[length - 1];
 
   String removeLast() {
@@ -7455,6 +7469,8 @@ class SVGTransformList extends NativeFieldWrapperClass1 implements List<SVGTrans
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGTransform get first => this[0];
+
   SVGTransform get last => this[length - 1];
 
   SVGTransform removeLast() {
@@ -7938,6 +7954,8 @@ class _SVGElementInstanceList extends NativeFieldWrapperClass1 implements List<S
     return _Lists.lastIndexOf(this, element, start);
   }
 
+  SVGElementInstance get first => this[0];
+
   SVGElementInstance get last => this[length - 1];
 
   SVGElementInstance removeLast() {