[inspector] use own copy of third_party/inspector_protocol

third_party/inspector_protocol/lib/ErrorSupport_cpp.template

+// 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 "ErrorSupport.h"
+
+{% for namespace in config.protocol.namespace %}
+namespace {{namespace}} {
+{% endfor %}
+
+ErrorSupport::ErrorSupport() : m_errorString(nullptr) { }
+ErrorSupport::ErrorSupport(String* errorString) : m_errorString(errorString) { }
+ErrorSupport::~ErrorSupport()
+{
+    if (m_errorString && hasErrors()) {
+        StringBuilder builder;
+        builder.append("Internal error(s): ");
+        builder.append(errors());
+        *m_errorString = builder.toString();
+    }
+}
+
+void ErrorSupport::setName(const String& name)
+{
+    DCHECK(m_path.size());
+    m_path[m_path.size() - 1] = name;
+}
+
+void ErrorSupport::push()
+{
+    m_path.push_back(String());
+}
+
+void ErrorSupport::pop()
+{
+    m_path.pop_back();
+}
+
+void ErrorSupport::addError(const String& error)
+{
+    StringBuilder builder;
+    for (size_t i = 0; i < m_path.size(); ++i) {
+        if (i)
+            builder.append('.');
+        builder.append(m_path[i]);
+    }
+    builder.append(": ");
+    builder.append(error);
+    m_errors.push_back(builder.toString());
+}
+
+bool ErrorSupport::hasErrors()
+{
+    return m_errors.size();
+}
+
+String ErrorSupport::errors()
+{
+    StringBuilder builder;
+    for (size_t i = 0; i < m_errors.size(); ++i) {
+        if (i)
+            builder.append("; ");
+        builder.append(m_errors[i]);
+    }
+    return builder.toString();
+}
+
+{% for namespace in config.protocol.namespace %}
+} // namespace {{namespace}}
+{% endfor %}