bindings: Use ExceptionMessages when an interface/callback conversion fails.

third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "bindings/core/v8/ExceptionMessages.h"
 
 #include "platform/Decimal.h"
 #include "platform/wtf/MathExtras.h"
 
 namespace blink {
 
+String ExceptionMessages::FailedToConvertJSValue(const char* type) {
+  return String::Format("Failed to convert value to '%s'.", type);
+}
+
 String ExceptionMessages::FailedToConstruct(const char* type,
                                             const String& detail) {
   return "Failed to construct '" + String(type) +
          (!detail.IsEmpty() ? String("': " + detail) : String("'"));
 }
 
 String ExceptionMessages::FailedToEnumerate(const char* type,
                                             const String& detail) {
   return "Failed to enumerate the properties of '" + String(type) +
          (!detail.IsEmpty() ? String("': " + detail) : String("'"));
@@ skipping 135 matching lines @@
 CORE_EXPORT String ExceptionMessages::FormatNumber<float>(float number) {
   return FormatPotentiallyNonFiniteNumber(number);
 }
 
 template <>
 CORE_EXPORT String ExceptionMessages::FormatNumber<double>(double number) {
   return FormatPotentiallyNonFiniteNumber(number);
 }
 
 }  // namespace blink