Add const char* overloads to ErrorSupport

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() { }
 ErrorSupport::~ErrorSupport() { }
 
+void ErrorSupport::setName(const char* name)
+{
+    setName(String(name));
+}
+
 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 char* error)
+{
+    addError(String(error));
+}
+
 void ErrorSupport::addError(const String& error)
 {
     StringBuilder builder;
     for (size_t i = 0; i < m_path.size(); ++i) {
         if (i)
             StringUtil::builderAppend(builder, '.');
         StringUtil::builderAppend(builder, m_path[i]);
     }
     StringUtil::builderAppend(builder, ": ");
     StringUtil::builderAppend(builder, error);
@@ skipping 12 matching lines @@
         if (i)
             StringUtil::builderAppend(builder, "; ");
         StringUtil::builderAppend(builder, m_errors[i]);
     }
     return StringUtil::builderToString(builder);
 }
 
 {% for namespace in config.protocol.namespace %}
 } // namespace {{namespace}}
 {% endfor %}