Port some things in browser/{download,history}, minor things in common....

chrome/browser/history/visit_tracker.cc

 // Copyright (c) 2006-2008 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/visit_tracker.h"
 
 #include "base/logging.h"
 
 namespace history {
 
 // When the list gets longer than 'MaxItems', CleanupTransitionList will resize
 // the list down to 'ResizeTo' size. This is so we only do few block moves of
 // the data rather than constantly shuffle stuff around in the vector.
-static const int kMaxItemsInTransitionList = 96;
-static const int kResizeBigTransitionListTo = 64;
+static const size_t kMaxItemsInTransitionList = 96;
+static const size_t kResizeBigTransitionListTo = 64;
 COMPILE_ASSERT(kResizeBigTransitionListTo < kMaxItemsInTransitionList,
                max_items_must_be_larger_than_resize_to);
 
 VisitTracker::VisitTracker() {
 }
 
 VisitTracker::~VisitTracker() {
   STLDeleteContainerPairSecondPointers(hosts_.begin(), hosts_.end());
 }
 
@@ skipping 72 matching lines @@
 void VisitTracker::CleanupTransitionList(TransitionList* transitions) {
   if (transitions->size() <= kMaxItemsInTransitionList)
     return;  // Nothing to do.
 
   transitions->erase(transitions->begin(),
                      transitions->begin() + kResizeBigTransitionListTo);
 }
 
 }  // namespace history