[bindings] Make Crypto.getRandomValues use generated binding rather than using custom binding.

Source/modules/crypto/Crypto.cpp

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 35 matching lines @@
         || type == DOMArrayBufferView::TypeUint8
         || type == DOMArrayBufferView::TypeUint8Clamped
         || type == DOMArrayBufferView::TypeInt16
         || type == DOMArrayBufferView::TypeUint16
         || type == DOMArrayBufferView::TypeInt32
         || type == DOMArrayBufferView::TypeUint32;
 }
 
 } // namespace
 
-void Crypto::getRandomValues(DOMArrayBufferView* array, ExceptionState& exceptionState)
+DOMArrayBufferView* Crypto::getRandomValues(DOMArrayBufferView* array, ExceptionState& exceptionState)
 {
     if (!array) {
         exceptionState.throwDOMException(TypeMismatchError, "The provided ArrayBufferView is null.");
-        return;
+        return nullptr;
     }
     if (!isIntegerArray(array)) {
         exceptionState.throwDOMException(TypeMismatchError, String::format("The provided ArrayBufferView is of type '%s', which is not an integer array type.", array->typeName()));
-        return;
+        return nullptr;
     }
     if (array->byteLength() > 65536) {
         exceptionState.throwDOMException(QuotaExceededError, String::format("The ArrayBufferView's byte length (%u) exceeds the number of bytes of entropy available via this API (65536).", array->byteLength()));
-        return;
+        return nullptr;
     }
     cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
+    return array;
 }
 
 SubtleCrypto* Crypto::subtle()
 {
     if (!m_subtleCrypto)
         m_subtleCrypto = SubtleCrypto::create();
     return m_subtleCrypto.get();
 }
 
 void Crypto::trace(Visitor* visitor)
 {
     visitor->trace(m_subtleCrypto);
 }
 
 } // namespace blink