Add SpdyString alias for std::string in net/spdy.

net/spdy/hpack/hpack_entry.cc

 // Copyright 2014 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/hpack/hpack_entry.h"
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/spdy/platform/api/spdy_estimate_memory_usage.h"
 
@@ skipping 56 matching lines @@
 
 // static
 size_t HpackEntry::Size(SpdyStringPiece name, SpdyStringPiece value) {
   return name.size() + value.size() + kSizeOverhead;
 }
 
 size_t HpackEntry::Size() const {
   return Size(name(), value());
 }
 
-std::string HpackEntry::GetDebugString() const {
-  return "{ name: \"" + std::string(name_ref_) + "\", value: \"" +
-         std::string(value_ref_) +
+SpdyString HpackEntry::GetDebugString() const {
+  return "{ name: \"" + SpdyString(name_ref_) + "\", value: \"" +
+         SpdyString(value_ref_) +
          "\", index: " + base::SizeTToString(insertion_index_) +
          (IsStatic() ? " static" : (IsLookup() ? " lookup" : " dynamic")) +
          " }";
 }
 
 size_t HpackEntry::EstimateMemoryUsage() const {
   return SpdyEstimateMemoryUsage(name_) + SpdyEstimateMemoryUsage(value_);
 }
 
 }  // namespace net