[Extensions Bindings] Add errors to signature parsing

extensions/renderer/api_invocation_errors.cc

 // Copyright 2017 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 "extensions/renderer/api_invocation_errors.h"
 
 #include <vector>
 
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 69 matching lines @@
 }
 
 std::string UnserializableValue() {
   return "Value is unserializable.";
 }
 
 std::string ScriptThrewError() {
   return "Script threw an error.";
 }
 
+std::string TooManyArguments() {
+  return "Too many arguments.";
+}
+
+std::string MissingRequiredArgument(const char* argument_name) {
+  return base::StringPrintf("Missing required argument '%s'.", argument_name);
+}
+
 std::string IndexError(uint32_t index, const std::string& error) {
   return base::StringPrintf("Error at index %u: %s", index, error.c_str());
 }
 
 std::string PropertyError(const char* property_name, const std::string& error) {
   return base::StringPrintf("Error at property '%s': %s", property_name,
                             error.c_str());
 }
 
+std::string ArgumentError(const std::string& parameter_name,
+                          const std::string& error) {
+  return base::StringPrintf("Error at parameter '%s': %s",
+                            parameter_name.c_str(), error.c_str());
+}
+
 }  // namespace api_errors
 }  // namespace extensions