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

net/spdy/spdy_deframer_visitor.h

 // 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.
 
 #ifndef NET_SPDY_SPDY_DEFRAMER_VISITOR_H_
 #define NET_SPDY_SPDY_DEFRAMER_VISITOR_H_
 
 // Supports testing by converting callbacks to SpdyFramerVisitorInterface into
 // callbacks to SpdyDeframerVisitorInterface, whose arguments are generally
 // SpdyFrameIR instances. This enables a test client or test backend to operate
@@ skipping 52 matching lines @@
 //
 //    // Repeat for the other frames.
 //
 // Note that you could also seed the subclass of SpdyDeframerVisitorInterface
 // with the expected frames, which it would pop-off the list as its expectations
 // are met.
 
 #include <stdint.h>
 
 #include <memory>
-#include <string>
 #include <type_traits>
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/macros.h"
+#include "net/spdy/platform/api/spdy_string.h"
 #include "net/spdy/spdy_framer.h"
 #include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_protocol_test_utils.h"
 #include "net/spdy/spdy_test_utils.h"
 
 namespace net {
 namespace test {
 
 // Non-lossy representation of a SETTINGS frame payload.
 typedef std::vector<std::pair<SpdySettingsIds, uint32_t>> SettingVector;
 
 // StringPairVector is used to record information lost by SpdyHeaderBlock, in
 // particular the order of each header entry, though it doesn't expose the
 // inner details of the HPACK block, such as the type of encoding selected
 // for each header entry, nor dynamic table size changes.
-typedef std::pair<std::string, std::string> StringPair;
+typedef std::pair<SpdyString, SpdyString> StringPair;
 typedef std::vector<StringPair> StringPairVector;
 
 // Forward decl.
 class SpdyTestDeframer;
 
 // Note that this only roughly captures the frames, as padding bytes are lost,
 // continuation frames are combined with their leading HEADERS or PUSH_PROMISE,
 // the details of the HPACK encoding are lost, leaving
 // only the list of header entries (name and value strings). If really helpful,
 // we could add a SpdyRawDeframerVisitorInterface that gets the HPACK bytes,
@@ skipping 135 matching lines @@
   void OnError(SpdyFramer* framer, SpdyTestDeframer* deframer) override;
 
  private:
   std::vector<CollectedFrame>* collected_frames_;
 };
 
 }  // namespace test
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_DEFRAMER_VISITOR_H_