Move some SpdyHeaderBlock instances from heap to stack.

net/spdy/bidirectional_stream_spdy_impl.cc

 // Copyright 2015 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/spdy/bidirectional_stream_spdy_impl.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 242 matching lines @@
   }
   ResetStream();
   // Complete any remaining read, as all data has been buffered.
   // If user has not called ReadData (i.e |read_buffer_| is nullptr), this will
   // do nothing.
   timer_->Stop();
   DoBufferedRead();
 }
 
 int BidirectionalStreamSpdyImpl::SendRequestHeadersHelper() {
-  std::unique_ptr<SpdyHeaderBlock> headers(new SpdyHeaderBlock);
+  SpdyHeaderBlock headers;
   HttpRequestInfo http_request_info;
   http_request_info.url = request_info_->url;
   http_request_info.method = request_info_->method;
   http_request_info.extra_headers = request_info_->extra_headers;
 
   CreateSpdyHeadersFromHttpRequest(
-      http_request_info, http_request_info.extra_headers, true, headers.get());
+      http_request_info, http_request_info.extra_headers, true, &headers);
   return stream_->SendRequestHeaders(std::move(headers),
                                      request_info_->end_stream_on_headers
                                          ? NO_MORE_DATA_TO_SEND
                                          : MORE_DATA_TO_SEND);
 }
 
 void BidirectionalStreamSpdyImpl::OnStreamInitialized(int rv) {
   DCHECK_NE(ERR_IO_PENDING, rv);
   if (rv == OK) {
     stream_ = stream_request_.ReleaseStream();
@@ skipping 74 matching lines @@
 
 bool BidirectionalStreamSpdyImpl::ShouldWaitForMoreBufferedData() const {
   if (stream_closed_)
     return false;
   DCHECK_GT(read_buffer_len_, 0);
   return read_data_queue_.GetTotalSize() <
          static_cast<size_t>(read_buffer_len_);
 }
 
 }  // namespace net