Implement verify() for HMAC using NSS

content/renderer/webcrypto_impl.h

Index: content/renderer/webcrypto_impl.h
diff --git a/content/renderer/webcrypto_impl.h b/content/renderer/webcrypto_impl.h
index 362be61307402eb35fd5f3041ca6c149e0d8ca32..6172607fdf737beea58b79ab97b5fe1d160cc82f 100644
--- a/content/renderer/webcrypto_impl.h
+++ b/content/renderer/webcrypto_impl.h
@@ -38,6 +38,14 @@ class CONTENT_EXPORT WebCryptoImpl
       const unsigned char* data,
       unsigned data_size,
       WebKit::WebCryptoResult result);
+  virtual void verifySignature(
+      const WebKit::WebCryptoAlgorithm& algorithm,
+      const WebKit::WebCryptoKey& key,
+      const unsigned char* signature,
+      unsigned signature_size,
+      const unsigned char* data,
+      unsigned data_size,
+      WebKit::WebCryptoResult result);
 
  protected:
   FRIEND_TEST_ALL_PREFIXES(WebCryptoImplTest, DigestSampleSets);
@@ -64,6 +72,14 @@ class CONTENT_EXPORT WebCryptoImpl
       const unsigned char* data,
       unsigned data_size,
       WebKit::WebArrayBuffer* buffer);
+  bool VerifySignatureInternal(
+      const WebKit::WebCryptoAlgorithm& algorithm,
+      const WebKit::WebCryptoKey& key,
+      const unsigned char* signature,
+      unsigned signature_size,
+      const unsigned char* data,
+      unsigned data_size,
+      bool* signature_match);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebCryptoImpl);