Separate the initialization code in the constructor of HMAC class into Init f...

chrome/browser/safe_browsing/safe_browsing_util.cc

Index: chrome/browser/safe_browsing/safe_browsing_util.cc
===================================================================
--- chrome/browser/safe_browsing/safe_browsing_util.cc	(revision 15317)
+++ chrome/browser/safe_browsing/safe_browsing_util.cc	(working copy)
@@ -170,9 +170,9 @@
   std::string decoded_mac;
   net::Base64Decode(mac_copy, &decoded_mac);
 
-  base::HMAC hmac(base::HMAC::SHA1,
-                  reinterpret_cast<const unsigned char*>(decoded_key.data()),
-                  static_cast<int>(decoded_key.length()));
+  base::HMAC hmac(base::HMAC::SHA1);
+  if (!hmac.Init(decoded_key))
+    return false;
   const std::string data_str(data, data_length);
   unsigned char digest[kSafeBrowsingMacDigestSize];
   if (!hmac.Sign(data_str, digest, kSafeBrowsingMacDigestSize))