Expose WebCrypto's algorithm normalization.

Source/modules/crypto/CryptoResultImpl.cpp

Index: Source/modules/crypto/CryptoResultImpl.cpp
diff --git a/Source/modules/crypto/CryptoResultImpl.cpp b/Source/modules/crypto/CryptoResultImpl.cpp
index 9f7d4324fc01f1419ea451107a90dc6c16ed3a38..3870fa7f9f5ac5597718894e163be1e004990d13 100644
--- a/Source/modules/crypto/CryptoResultImpl.cpp
+++ b/Source/modules/crypto/CryptoResultImpl.cpp
@@ -47,9 +47,7 @@
 
 namespace WebCore {
 
-namespace {
-
-ExceptionCode toExceptionCode(blink::WebCryptoErrorType errorType)
+ExceptionCode webCryptoErrorToExceptionCode(blink::WebCryptoErrorType errorType)
 {
     switch (errorType) {
     case blink::WebCryptoErrorTypeNotSupported:
@@ -77,8 +75,6 @@ ExceptionCode toExceptionCode(blink::WebCryptoErrorType errorType)
     return 0;
 }
 
-} // namespace
-
 // The PromiseState class contains all the state which is tied to an
 // ExecutionContext. Whereas CryptoResultImpl can be deleted from any thread,
 // PromiseState is not thread safe and must only be accessed and deleted from
@@ -109,7 +105,7 @@ public:
 
     void completeWithError(blink::WebCryptoErrorType errorType, const blink::WebString& errorDetails)
     {
-        m_promiseResolver->reject(DOMException::create(toExceptionCode(errorType), errorDetails));
+        m_promiseResolver->reject(DOMException::create(webCryptoErrorToExceptionCode(errorType), errorDetails));
         delete this;
     }