Change other usages of .size() to .empty() when applicable.

net/base/dnssec_chain_verifier.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/dnssec_chain_verifier.h"
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/sha1.h"
 #include "base/sha2.h"
@@ skipping 714 matching lines @@
 
   for (unsigned i = 0; i < num_ds; i++) {
     uint8 digest_type;
     base::StringPiece digest;
     if (!U8(&digest_type) ||
         !VariableLength16(&digest)) {
       return BAD_DATA;
     }
 
     digest_types[i] = digest_type;
-    if (digest.size() > 0) {
+    if (!digest.empty()) {

[Peter Kasting, 2011/03/03 19:35:53]

Nit:

    lookahead[i] = digest.empty();
    if (!digest.empty())
      (*rrdatas)[i] = digest;

       (*rrdatas)[i] = digest;
       lookahead[i] = false;
     } else {
       lookahead[i] = true;
     }
   }
 
   base::StringPiece next_entry_key;
   if (!ReadAheadEntryKey(&next_entry_key))
     return BAD_DATA;
@@ skipping 58 matching lines @@
   base::StringPiece name;
   if (!ReadName(&name))
     return BAD_DATA;
 
   rrdatas->resize(1);
   (*rrdatas)[0] = name;
   return OK;
 }
 
 }  // namespace net