Disk cache: Fix a signed / unsigned comparison on cl 17052

net/disk_cache/backend_impl.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 "net/disk_cache/backend_impl.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/histogram.h"
 #include "base/message_loop.h"
@@ skipping 771 matching lines @@
 
 void BackendImpl::CriticalError(int error) {
   LOG(ERROR) << "Critical error found " << error;
   if (disabled_)
     return;
 
   LogStats();
   ReportError(error);
 
   // Reset the mask_ if it was not given by the user.
-  if (mask_ == data_->header.table_len - 1)
+  if (static_cast<int>(mask_) == data_->header.table_len - 1)
     mask_ = 0;
 
   // Setting the index table length to an invalid value will force re-creation
   // of the cache files.
   data_->header.table_len = 1;
   disabled_ = true;
 
   if (!num_refs_)
     RestartCache();
 }
@@ skipping 178 matching lines @@
   // Don't call Init() if directed by the unit test: we are simulating a failure
   // trying to re-enable the cache.
   if (unit_test_)
     init_ = true;  // Let the destructor do proper cleanup.
   else if (Init())
     stats_.SetCounter(Stats::FATAL_ERROR, errors + 1);
 }
 
 void BackendImpl::PrepareForRestart() {
   // Reset the mask_ if it was not given by the user.
-  if (mask_ == data_->header.table_len - 1)
+  if (static_cast<int>(mask_) == data_->header.table_len - 1)
     mask_ = 0;
 
   data_->header.crash = 0;
   index_ = NULL;
   data_ = NULL;
   block_files_.CloseFiles();
   rankings_.Reset();
   init_ = false;
   restarted_ = true;
 }
@@ skipping 497 matching lines @@
 
   return num_dirty;
 }
 
 bool BackendImpl::CheckEntry(EntryImpl* cache_entry) {
   RankingsNode* rankings = cache_entry->rankings()->Data();
   return !rankings->pointer;
 }
 
 }  // namespace disk_cache