[es6] Perform the IsConstructor test in GetSuperConstructor.

src/code-stub-assembler.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 965 matching lines @@
                               compiler::Node* rhs, compiler::Node* context);
 
   compiler::Node* HasProperty(
       compiler::Node* object, compiler::Node* key, compiler::Node* context,
       Runtime::FunctionId fallback_runtime_function_id = Runtime::kHasProperty);
   compiler::Node* ForInFilter(compiler::Node* key, compiler::Node* object,
                               compiler::Node* context);
 
   compiler::Node* Typeof(compiler::Node* value, compiler::Node* context);
 
+  compiler::Node* GetSuperConstructor(compiler::Node* value,
+                                      compiler::Node* context);
+
   compiler::Node* InstanceOf(compiler::Node* object, compiler::Node* callable,
                              compiler::Node* context);
 
   // TypedArray/ArrayBuffer helpers
   compiler::Node* IsDetachedBuffer(compiler::Node* buffer);
 
  private:
   enum ElementSupport { kOnlyProperties, kSupportElements };
 
   void DescriptorLookupLinear(compiler::Node* unique_name,
@@ skipping 57 matching lines @@
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 #define CSA_ASSERT(x) Assert((x), #x, __FILE__, __LINE__)
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_