Add window.crypto.subtle behind a runtime feature flag ("Crypto")

Source/modules/crypto/SubtleCrypto.h

Index: Source/modules/crypto/SubtleCrypto.h
diff --git a/Source/modules/crypto/Crypto.h b/Source/modules/crypto/SubtleCrypto.h
similarity index 84%
copy from Source/modules/crypto/Crypto.h
copy to Source/modules/crypto/SubtleCrypto.h
index 3e34ca1599864a5d9cd6592bb922ebc0b6272aeb..a7550052758fb678221f9c7be4f2209562325cdc 100644
--- a/Source/modules/crypto/Crypto.h
+++ b/Source/modules/crypto/SubtleCrypto.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011 Google Inc. All rights reserved.
+ * 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
@@ -26,8 +26,8 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef Crypto_h
-#define Crypto_h
+#ifndef SubtleCrypto_h
+#define SubtleCrypto_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "wtf/Forward.h"
@@ -38,14 +38,12 @@ namespace WebCore {
 
 typedef int ExceptionCode;
 
-class Crypto : public ScriptWrappable, public RefCounted<Crypto> {
+class SubtleCrypto : public ScriptWrappable, public RefCounted<SubtleCrypto> {
 public:
-    static PassRefPtr<Crypto> create() { return adoptRef(new Crypto()); }
-
-    void getRandomValues(ArrayBufferView*, ExceptionCode&);
+    static PassRefPtr<SubtleCrypto> create() { return adoptRef(new SubtleCrypto()); }
 
 private:
-    Crypto();
+    SubtleCrypto();
 };
 
 }