Add support for the new function-type syntax.

pkg/compiler/lib/src/serialization/equivalence.dart

Index: pkg/compiler/lib/src/serialization/equivalence.dart
diff --git a/pkg/compiler/lib/src/serialization/equivalence.dart b/pkg/compiler/lib/src/serialization/equivalence.dart
index 3fd3f451a665029061a93ba5cbba20e11e7b4290..6322a05e94d3fd567186c3be7389dfa68da5b696 100644
--- a/pkg/compiler/lib/src/serialization/equivalence.dart
+++ b/pkg/compiler/lib/src/serialization/equivalence.dart
@@ -2044,7 +2044,8 @@ class NodeEquivalenceVisitor implements Visitor1<bool, Node> {
   }
 
   @override
-  bool visitTypeAnnotation(TypeAnnotation node1, TypeAnnotation node2) {
+  bool visitNominalTypeAnnotation(
+      NominalTypeAnnotation node1, NominalTypeAnnotation node2) {
     return testNodes(
             node1, node2, 'typeName', node1.typeName, node2.typeName) &&
         testNodes(node1, node2, 'typeArguments', node1.typeArguments,
@@ -2052,6 +2053,16 @@ class NodeEquivalenceVisitor implements Visitor1<bool, Node> {
   }
 
   @override
+  bool visitFunctionTypeAnnotation(
+      FunctionTypeAnnotation node1, FunctionTypeAnnotation node2) {
+    return testNodes(
+        node1, node2, 'returnType', node1.returnType, node2.returnType) &&
+        testNodes(node1, node2, 'formals', node1.formals, node2.formals) &&
+            testNodes(node1, node2, 'typeParameters', node1.typeParameters,
+                node2.typeParameters);
+  }
+
+  @override
   bool visitTypeVariable(TypeVariable node1, TypeVariable node2) {
     return testNodes(node1, node2, 'name', node1.name, node2.name) &&
         testNodes(node1, node2, 'bound', node1.bound, node2.bound);
@@ -2065,8 +2076,8 @@ class NodeEquivalenceVisitor implements Visitor1<bool, Node> {
         testNodes(
             node1, node2, 'returnType', node1.returnType, node2.returnType) &&
         testNodes(node1, node2, 'name', node1.name, node2.name) &&
-        testNodes(node1, node2, 'typeParameters', node1.typeParameters,
-            node2.typeParameters) &&
+        testNodes(node1, node2, 'typeParameters', node1.templateParameters,
+            node2.templateParameters) &&
         testNodes(node1, node2, 'formals', node1.formals, node2.formals);
   }
 
@@ -2121,6 +2132,11 @@ class NodeEquivalenceVisitor implements Visitor1<bool, Node> {
   bool visitStringNode(StringNode node1, StringNode node2) {
     throw new UnsupportedError('Unexpected nodes: $node1 <> $node2');
   }
+
+  @override
+  bool visitTypeAnnotation(TypeAnnotation node1, TypeAnnotation node2) {
+    throw new UnsupportedError('Unexpected nodes: $node1 <> $node2');
+  }
 }
 
 bool areMetadataAnnotationsEquivalent(