[inspector] change implementation file extension from cpp to cc

src/inspector/ProtocolPlatform.h

Index: src/inspector/ProtocolPlatform.h
diff --git a/src/inspector/ProtocolPlatform.h b/src/inspector/ProtocolPlatform.h
deleted file mode 100644
index c7723932b42465f0abb5d2f7f3f4dc5e42c1f05d..0000000000000000000000000000000000000000
--- a/src/inspector/ProtocolPlatform.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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_INSPECTOR_PROTOCOLPLATFORM_H_
-#define V8_INSPECTOR_PROTOCOLPLATFORM_H_
-
-#include <memory>
-
-#include "src/base/logging.h"
-
-namespace v8_inspector {
-
-template <typename T>
-std::unique_ptr<T> wrapUnique(T* ptr) {
-  return std::unique_ptr<T>(ptr);
-}
-
-}  // namespace v8_inspector
-
-#endif  // V8_INSPECTOR_PROTOCOLPLATFORM_H_