Remove an unnecessary CachedMetadata copy in URLLoaderClientImpl

content/child/url_loader_client_impl.cc

 // Copyright 2016 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 "content/child/url_loader_client_impl.h"
 
 #include "base/callback.h"
 #include "base/single_thread_task_runner.h"
 #include "content/child/resource_dispatcher.h"
 #include "content/child/url_response_body_consumer.h"
@@ skipping 128 matching lines @@
     StoreAndDispatch(
         ResourceMsg_DataDownloaded(request_id_, data_len, encoded_data_len));
   } else {
     resource_dispatcher_->OnDownloadedData(request_id_, data_len,
                                            encoded_data_len);
   }
 }
 
 void URLLoaderClientImpl::OnReceiveCachedMetadata(
     const std::vector<uint8_t>& data) {
-  const uint8_t* data_ptr = reinterpret_cast<const uint8_t*>(data.data());
-  std::vector<char> data_to_pass(data_ptr, data_ptr + data.size());
   if (NeedsStoringMessage()) {
-    StoreAndDispatch(
-        ResourceMsg_ReceivedCachedMetadata(request_id_, data_to_pass));
+    StoreAndDispatch(ResourceMsg_ReceivedCachedMetadata(request_id_, data));
   } else {
-    resource_dispatcher_->OnReceivedCachedMetadata(request_id_, data_to_pass);
+    resource_dispatcher_->OnReceivedCachedMetadata(request_id_, data);
   }
 }
 
 void URLLoaderClientImpl::OnTransferSizeUpdated(int32_t transfer_size_diff) {
   if (is_deferred_) {
     accumulated_transfer_size_diff_during_deferred_ += transfer_size_diff;
   } else {
     resource_dispatcher_->OnTransferSizeUpdated(request_id_,
                                                 transfer_size_diff);
   }
@@ skipping 45 matching lines @@
     StoreAndDispatch(
         ResourceMsg_UploadProgress(request_id_, current_position, total_size));
   } else {
     resource_dispatcher_->OnUploadProgress(request_id_, current_position,
                                            total_size);
   }
   ack_callback.Run();
 }
 
 }  // namespace content