Allow PBKDF2 key derivation using an empty password.

content/child/webcrypto/openssl/pbkdf2_openssl.cc

Index: content/child/webcrypto/openssl/pbkdf2_openssl.cc
diff --git a/content/child/webcrypto/openssl/pbkdf2_openssl.cc b/content/child/webcrypto/openssl/pbkdf2_openssl.cc
index 9f3017b52323ad57aa188b70d0628fada278483b..d7ce4856a2bfdb1bde4666d41f6e4e65a2e0130d 100644
--- a/content/child/webcrypto/openssl/pbkdf2_openssl.cc
+++ b/content/child/webcrypto/openssl/pbkdf2_openssl.cc
@@ -75,14 +75,6 @@ class Pbkdf2Implementation : public AlgorithmImplementation {
     const std::vector<uint8_t>& password =
         SymKeyOpenSsl::Cast(base_key)->raw_key_data();
 
-    // TODO(xun.sun): Empty password would derive random keys with
-    // PKCS5_PBKDF2_HMAC().
-    // https://code.google.com/p/chromium/issues/detail?id=449409
-    //
-    // Rejecting them until it is addressed in BoringSSL.
-    if (password.empty())
-      return Status::ErrorPbkdf2EmptyPassword();
-
     if (keylen_bytes == 0)
       return Status::Success();