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

chrome/browser/history/history_publisher_win.cc

 // Copyright (c) 2008-2009 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 "chrome/browser/history/history_publisher.h"
 
 #include <atlsafe.h>
 #include <objbase.h>
 #include <oleauto.h>
 #include <wtypes.h>
@@ skipping 87 matching lines @@
 }
 
 // Peruse the registry for Indexer to instantiate and store in |indexers_|.
 // Return true if we found at least one indexer object. We look both in HKCU
 // and HKLM.
 bool HistoryPublisher::ReadRegisteredIndexersFromRegistry() {
   AddRegisteredIndexers(HKEY_CURRENT_USER,
                         kRegKeyRegisteredIndexersInfo, &indexers_);
   AddRegisteredIndexers(HKEY_LOCAL_MACHINE,
                         kRegKeyRegisteredIndexersInfo, &indexers_);
-  return indexers_.size() > 0;
+  return !indexers_.empty();
 }
 
 void HistoryPublisher::PublishDataToIndexers(const PageData& page_data)
     const {
   double var_time = TimeToUTCVariantTime(page_data.time);
 
   CComSafeArray<unsigned char> thumbnail_arr;
   if (page_data.thumbnail) {
     for (size_t i = 0; i < page_data.thumbnail->size(); ++i)
       thumbnail_arr.Add((*page_data.thumbnail)[i]);
@@ skipping 20 matching lines @@
   base::win::ScopedVariant var_begin_time(TimeToUTCVariantTime(begin_time),
                                           VT_DATE);
   base::win::ScopedVariant var_end_time(TimeToUTCVariantTime(end_time),
                                         VT_DATE);
   for (size_t i = 0; i < indexers_.size(); ++i) {
     indexers_[i]->DeleteUserHistoryBetween(var_begin_time, var_end_time);
   }
 }
 
 }  // namespace history