WebCrypto: Add framework for AlgorithmIdentifier normalization.

public/platform/WebVector.h

Index: public/platform/WebVector.h
diff --git a/public/platform/WebVector.h b/public/platform/WebVector.h
index bb02abcdff2cc157362507b3ce86e8dd782145a2..f704fd2a1f8e9fcabba18196227a885887fd5feb 100644
--- a/public/platform/WebVector.h
+++ b/public/platform/WebVector.h
@@ -73,6 +73,12 @@ public:
         initialize(size);
     }
 
+    template <typename U>
+    WebVector(const U* values, size_t size)
+    {
+        initializeFrom(values, size);
+    }
+
     WebVector(const WebVector<T>& other)
     {
         initializeFrom(other.m_ptr, other.m_size);