[Extensions Bindings] Add errors to signature parsing

extensions/renderer/api_invocation_errors.cc

Index: extensions/renderer/api_invocation_errors.cc
diff --git a/extensions/renderer/api_invocation_errors.cc b/extensions/renderer/api_invocation_errors.cc
index 34d147ff20b5b5ad28e0f5ed8397b0548f435955..58c0784aeda8a8c2bb0eac1dea2041c86aec9b92 100644
--- a/extensions/renderer/api_invocation_errors.cc
+++ b/extensions/renderer/api_invocation_errors.cc
@@ -87,6 +87,14 @@ 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());
 }
@@ -96,5 +104,11 @@ std::string PropertyError(const char* property_name, const std::string& error) {
                             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