Disk cache: Add a little more tracing for the stress test...

net/disk_cache/backend_impl.cc

Index: net/disk_cache/backend_impl.cc
===================================================================
--- net/disk_cache/backend_impl.cc	(revision 60547)
+++ net/disk_cache/backend_impl.cc	(working copy)
@@ -778,6 +778,7 @@
 
   TimeTicks start = TimeTicks::Now();
   uint32 hash = Hash(key);
+  Trace("Open hash 0x%x", hash);
 
   EntryImpl* cache_entry = MatchEntry(key, hash, false);
   if (!cache_entry) {
@@ -806,6 +807,7 @@
 
   TimeTicks start = TimeTicks::Now();
   uint32 hash = Hash(key);
+  Trace("Create hash 0x%x", hash);
 
   scoped_refptr<EntryImpl> parent;
   Addr entry_address(data_->table[hash & mask_]);
@@ -1582,6 +1584,7 @@
       continue;
     }
 
+    DCHECK_EQ(hash & mask_, cache_entry->entry()->Data()->hash & mask_);
     if (cache_entry->IsSameEntry(key, hash)) {
       if (!cache_entry->Update())
         cache_entry = NULL;