Transfer WebCrypto databuffers across the Blink API using blink::WebVector.

components/webcrypto/algorithms/aes_ctr_unittest.cc

Index: components/webcrypto/algorithms/aes_ctr_unittest.cc
diff --git a/components/webcrypto/algorithms/aes_ctr_unittest.cc b/components/webcrypto/algorithms/aes_ctr_unittest.cc
index cd5788150767c2a9246094eeae64ca296700298b..eaee87eee7a8c0d71dbff3714e8c9458dcaef67a 100644
--- a/components/webcrypto/algorithms/aes_ctr_unittest.cc
+++ b/components/webcrypto/algorithms/aes_ctr_unittest.cc
@@ -24,9 +24,7 @@ blink::WebCryptoAlgorithm CreateAesCtrAlgorithm(
     uint8_t length_bits) {
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       blink::WebCryptoAlgorithmIdAesCtr,
-      new blink::WebCryptoAesCtrParams(
-          length_bits, counter.data(),
-          static_cast<unsigned int>(counter.size())));
+      new blink::WebCryptoAesCtrParams(length_bits, counter));
 }
 
 class WebCryptoAesCtrTest : public WebCryptoTestBase {};