Implement PBKDF2 (except for generateKey) using BoringSSL

content/child/webcrypto/status.h

Index: content/child/webcrypto/status.h
diff --git a/content/child/webcrypto/status.h b/content/child/webcrypto/status.h
index c3331361ebb10c7c14d57986de98a53f51695dc4..95acfcce53de47a97163fb3876b809de8a0ebc86 100644
--- a/content/child/webcrypto/status.h
+++ b/content/child/webcrypto/status.h
@@ -256,6 +256,9 @@ class CONTENT_EXPORT Status {
   // The requested bit length for ECDH key derivation was too large.
   static Status ErrorEcdhLengthTooBig(unsigned int max_length_bits);
 
+  // The requested bit length for PBKDF2 key derivation was invalid.
+  static Status ErrorPbkdf2InvalidLength();
+
  private:
   enum Type { TYPE_ERROR, TYPE_SUCCESS };