Expose crypto.getRandomValues() to workers.

Source/modules/crypto/Crypto.h

Index: Source/modules/crypto/Crypto.h
diff --git a/Source/modules/crypto/Crypto.h b/Source/modules/crypto/Crypto.h
index d4f5cda3ae92170a7f90b892691540722882ff60..6a8ca977fed119b2caa9d7058912b8c678a91022 100644
--- a/Source/modules/crypto/Crypto.h
+++ b/Source/modules/crypto/Crypto.h
@@ -29,22 +29,17 @@
 #ifndef Crypto_h
 #define Crypto_h
 
-#include "bindings/v8/ScriptWrappable.h"
+#include "modules/crypto/RandomSource.h"
 #include "modules/crypto/SubtleCrypto.h"
-#include "wtf/Forward.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 typedef int ExceptionCode;
 
-class Crypto : public ScriptWrappable, public RefCounted<Crypto> {
+class Crypto : public RandomSource {
 public:
     static PassRefPtr<Crypto> create() { return adoptRef(new Crypto()); }
 
-    void getRandomValues(ArrayBufferView*, ExceptionCode&);
-
     SubtleCrypto* subtle();
 
 private: