add completion in type argument list

pkg/analysis_server/test/services/completion/optype_test.dart

Index: pkg/analysis_server/test/services/completion/optype_test.dart
diff --git a/pkg/analysis_server/test/services/completion/optype_test.dart b/pkg/analysis_server/test/services/completion/optype_test.dart
index 9ff44e53a86c996f4869b3c580db4a9fc40db88f..fe1eefbd08ca44e707d2fde81fd1d1a5e94a2326 100644
--- a/pkg/analysis_server/test/services/completion/optype_test.dart
+++ b/pkg/analysis_server/test/services/completion/optype_test.dart
@@ -178,6 +178,12 @@ class OpTypeTest {
     assertOpType(returnValue: true, typeNames: true);
   }
 
+  test_BinaryExpression_RHS2() {
+    // SimpleIdentifier  BinaryExpression
+    addTestSource('main() {if (c < ^)}');
+    assertOpType(returnValue: true, typeNames: true);
+  }
+
   test_Block() {
     // Block  BlockFunctionBody  MethodDeclaration
     addTestSource('''
@@ -1046,6 +1052,18 @@ class C2 {
     assertOpType();
   }
 
+  test_TypeArgumentList() {
+    // SimpleIdentifier  BinaryExpression  ExpressionStatement
+    addTestSource('main() { C<^> c; }');
+    assertOpType(typeNames: true);
+  }
+
+  test_TypeArgumentList2() {
+    // TypeName  TypeArgumentList  TypeName
+    addTestSource('main() { C<C^> c; }');
+    assertOpType(typeNames: true);
+  }
+
   test_TypeParameter() {
     // SimpleIdentifier  TypeParameter  TypeParameterList
     addTestSource('class tezetst <String, ^List> {}');