Disk cache: Switch the disk cache to use the cache_thread....

net/disk_cache/sparse_control.cc

Index: net/disk_cache/sparse_control.cc
===================================================================
--- net/disk_cache/sparse_control.cc	(revision 50158)
+++ net/disk_cache/sparse_control.cc	(working copy)
@@ -126,7 +126,7 @@
     return Release();
   }
   std::string child_name = GenerateChildName(name_, signature_, child_id);
-  backend_->DoomEntry(child_name);
+  backend_->SyncDoomEntry(child_name);
   children_map_.Set(child_id, false);
 
   // Post a task to delete the next child.
@@ -373,7 +373,7 @@
     CloseChild();
   }
 
-  // Se if we are tracking this child.
+  // See if we are tracking this child.
   if (!ChildPresent())
     return ContinueWithoutChild(key);
 
@@ -418,7 +418,7 @@
                              NULL, false);
   if (rv != sizeof(child_data_))
     DLOG(ERROR) << "Failed to save child data";
-  child_->Close();
+  child_->Release();
   child_ = NULL;
 }
 
@@ -430,8 +430,8 @@
 // We are deleting the child because something went wrong.
 bool SparseControl::KillChildAndContinue(const std::string& key, bool fatal) {
   SetChildBit(false);
-  child_->Doom();
-  child_->Close();
+  child_->DoomImpl();
+  child_->Release();
   child_ = NULL;
   if (fatal) {
     result_ = net::ERR_CACHE_READ_FAILURE;