Add a command line switch to allow setting the max size...

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 564 matching lines @@
 
 bool BackendImpl::SetMaxSize(int max_bytes) {
   COMPILE_ASSERT(sizeof(max_bytes) == sizeof(max_size_), unsupported_int_model);
   if (max_bytes < 0)
     return false;
 
   // Zero size means use the default.
   if (!max_bytes)
     return true;
 
+  // Avoid a DCHECK later on.
+  if (max_bytes >= kint32max - kint32max / 10)
+    max_bytes = kint32max - kint32max / 10 - 1;
+
   user_flags_ |= kMaxSize;
   max_size_ = max_bytes;
   return true;
 }
 
 void BackendImpl::SetType(net::CacheType type) {
   DCHECK(type != net::MEMORY_CACHE);
   cache_type_ = type;
 }
 
@@ skipping 923 matching lines @@
 
   return num_dirty;
 }
 
 bool BackendImpl::CheckEntry(EntryImpl* cache_entry) {
   RankingsNode* rankings = cache_entry->rankings()->Data();
   return !rankings->pointer;
 }
 
 }  // namespace disk_cache