Emit unwinding information for TurboFan code.

src/compiler/ia32/unwinding-info-writer-ia32.h

Index: src/compiler/ia32/unwinding-info-writer-ia32.h
diff --git a/src/compiler/ia32/unwinding-info-writer-ia32.h b/src/compiler/ia32/unwinding-info-writer-ia32.h
new file mode 100644
index 0000000000000000000000000000000000000000..2c6940c57dd68c73255249ccae967df7388a49a7
--- /dev/null
+++ b/src/compiler/ia32/unwinding-info-writer-ia32.h
@@ -0,0 +1,41 @@
+// 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_COMPILER_IA32_UNWINDING_INFO_WRITER_H_
+#define V8_COMPILER_IA32_UNWINDING_INFO_WRITER_H_
+
+#include "src/eh-frame.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+class InstructionBlock;
+
+class UnwindingInfoWriter {
+ public:
+  void BeginInstructionBlock(int pc_offset, const InstructionBlock* block) {
+    UNIMPLEMENTED();
+  }
+
+  void EndInstructionBlock(const InstructionBlock* block) { UNIMPLEMENTED(); }
+
+  void MarkFrameConstructed(int pc_base) { UNIMPLEMENTED(); }
+  void MarkFrameDeconstructed(int pc_base) { UNIMPLEMENTED(); }
+
+  void MarkBlockWillExit() { UNIMPLEMENTED(); }
+
+  void Finish(int code_size) { UNIMPLEMENTED(); }
+
+  EhFrameWriter* eh_frame_writer() {
+    UNIMPLEMENTED();
+    return nullptr;
+  }
+};
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif