Http cache: Allow caching of byte ranges without strong validators.

net/http/partial_data.cc

 // Copyright (c) 2012 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/http/partial_data.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
@@ skipping 262 matching lines @@
   }
 
   if (headers->response_code() != 206) {
     DCHECK(byte_range_.IsValid());
     sparse_entry_ = false;
     resource_size_ = entry->GetDataSize(kDataStream);
     DVLOG(2) << "UpdateFromStoredHeaders size: " << resource_size_;
     return true;
   }
 
-  if (!headers->HasStrongValidators())
-    return false;
-
   int64 length_value = headers->GetContentLength();
   if (length_value <= 0)
     return false;  // We must have stored the resource length.
 
   resource_size_ = length_value;
 
   // Make sure that this is really a sparse entry.
   return entry->CouldBeSparse();
 }
 
@@ skipping 183 matching lines @@
   cached_min_len_ = result;
   if (result >= 0)
     result = 1;  // Return success, go ahead and validate the entry.
 
   CompletionCallback cb = callback_;
   callback_.Reset();
   cb.Run(result);
 }
 
 }  // namespace net