Pure pedantry: Replace all ".size() == 0" with ".empty()".

chrome/browser/renderer_host/web_cache_manager.cc

 // Copyright (c) 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/renderer_host/web_cache_manager.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/metrics/histogram.h"
@@ skipping 238 matching lines @@
 }
 
 void WebCacheManager::AddToStrategy(const std::set<int>& renderers,
                                     AllocationTactic tactic,
                                     size_t extra_bytes_to_allocate,
                                     AllocationStrategy* strategy) {
   DCHECK(strategy);
 
   // Nothing to do if there are no renderers.  It is common for there to be no
   // inactive renderers if there is a single active tab.
-  if (renderers.size() == 0)
+  if (renderers.empty())
     return;
 
   // Divide the extra memory evenly among the renderers.
   size_t extra_each = extra_bytes_to_allocate / renderers.size();
 
   std::set<int>::const_iterator iter = renderers.begin();
   while (iter != renderers.end()) {
     size_t cache_size = extra_each;
 
     // Add in the space required to implement |tactic|.
@@ skipping 131 matching lines @@
     if (idle >= TimeDelta::FromMinutes(kRendererInactiveThresholdMinutes)) {
       // Moved to inactive status.  This invalidates our iterator.
       inactive_renderers_.insert(*iter);
       active_renderers_.erase(*iter);
       iter = active_renderers_.begin();
       continue;
     }
     ++iter;
   }
 }