[DevTools] Migrate v8_inspector/public from String16 to String{View,Buffer}.

third_party/WebKit/Source/core/inspector/V8InspectorStringView.cpp

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/inspector/V8InspectorStringView.h"
+
+namespace blink {
+
+v8_inspector::StringView toV8InspectorStringView(const StringView& string)
+{
+    if (string.isNull())
+        return v8_inspector::StringView();
+    if (string.is8Bit())
+        return v8_inspector::StringView(reinterpret_cast<const uint8_t*>(string.characters8()), string.length());
+    return v8_inspector::StringView(reinterpret_cast<const uint16_t*>(string.characters16()), string.length());
+}
+
+String toCoreString(const v8_inspector::StringView& string)
+{
+    if (string.is8Bit()) {
+        if (!string.characters8())
+            return String();
+        if (!string.length())
+            return emptyString();
+        return String(reinterpret_cast<const LChar*>(string.characters8()), string.length());
+    }
+    if (!string.characters16())
+        return String();
+    if (!string.length())
+        return emptyString();
+    return String(reinterpret_cast<const UChar*>(string.characters16()), string.length());
+}
+
+} // namespace blink