[inspector] change implementation file extension from cpp to cc

src/inspector/StringUtil.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_INSPECTOR_STRINGUTIL_H_
-#define V8_INSPECTOR_STRINGUTIL_H_
-
-#include "src/base/macros.h"
-#include "src/inspector/String16.h"
-
-#include "include/v8-inspector.h"
-
-namespace v8_inspector {
-
-namespace protocol {
-
-class Value;
-
-using String = v8_inspector::String16;
-using StringBuilder = v8_inspector::String16Builder;
-
-class StringUtil {
- public:
-  static String substring(const String& s, unsigned pos, unsigned len) {
-    return s.substring(pos, len);
-  }
-  static String fromInteger(int number) { return String::fromInteger(number); }
-  static String fromDouble(double number) { return String::fromDouble(number); }
-  static const size_t kNotFound = String::kNotFound;
-  static void builderReserve(StringBuilder& builder, unsigned capacity) {
-    builder.reserveCapacity(capacity);
-  }
-};
-
-std::unique_ptr<protocol::Value> parseJSON(const StringView& json);
-std::unique_ptr<protocol::Value> parseJSON(const String16& json);
-
-}  // namespace protocol
-
-std::unique_ptr<protocol::Value> toProtocolValue(v8::Local<v8::Context>,
-                                                 v8::Local<v8::Value>,
-                                                 int maxDepth = 1000);
-
-v8::Local<v8::String> toV8String(v8::Isolate*, const String16&);
-v8::Local<v8::String> toV8StringInternalized(v8::Isolate*, const String16&);
-v8::Local<v8::String> toV8StringInternalized(v8::Isolate*, const char*);
-v8::Local<v8::String> toV8String(v8::Isolate*, const StringView&);
-// TODO(dgozman): rename to toString16.
-String16 toProtocolString(v8::Local<v8::String>);
-String16 toProtocolStringWithTypeCheck(v8::Local<v8::Value>);
-String16 toString16(const StringView&);
-StringView toStringView(const String16&);
-bool stringViewStartsWith(const StringView&, const char*);
-
-class StringBufferImpl : public StringBuffer {
-  DISALLOW_COPY_AND_ASSIGN(StringBufferImpl);
-
- public:
-  // Destroys string's content.
-  static std::unique_ptr<StringBufferImpl> adopt(String16&);
-  const StringView& string() override { return m_string; }
-
- private:
-  explicit StringBufferImpl(String16&);
-  String16 m_owner;
-  StringView m_string;
-};
-
-}  //  namespace v8_inspector
-
-#endif  // V8_INSPECTOR_STRINGUTIL_H_