Fixed slot selection in HMAC class to ensure that we are using softtoken instead of TPM slots.

BUG=chromium-os:21633
TEST=make sure that user signin works properly on Alex - we should not show Gaia signin screen on second login after system resote
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=106881
Review URL: http://codereview.chromium.org/8373022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106882 0039d316-1c4b-4281-b951-d872f2087c98

crypto/hmac_nss.cc

@@ -100,9 +100,6 @@ bool HMAC::Sign(const base::StringPiece& data,
   if (PK11_DigestOp(context.get(),
                     reinterpret_cast<const unsigned char*>(data.data()),
                     data.length()) != SECSuccess) {
-    LOG(WARNING) << "PK11_DigestOp failed, error " << PORT_GetError()
-                 << ", slot name " << PK11_GetSlotName(plat_->slot_.get())
-                 << ", token name " << PK11_GetTokenName(plat_->slot_.get());
     NOTREACHED();
     return false;
   }