Fix some includes in //net/http2/.

net/http2/decoder/http2_frame_decoder_test.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 "net/http2/decoder/http2_frame_decoder.h"
 
 // Tests of Http2FrameDecoder.
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "net/http2/decoder/frame_parts.h"
 #include "net/http2/decoder/frame_parts_collector_listener.h"
 #include "net/http2/http2_constants.h"
 #include "net/http2/tools/failure.h"
@@ skipping 918 matching lines @@
       0x80u, 0x00, 0x04, 0x00,  //   Incr: 1024 (plus R bit)
       0x00,                     // Too much
   };
   Http2FrameHeader header(5, Http2FrameType::WINDOW_UPDATE, 0, 1);
   EXPECT_TRUE(DecodePayloadExpectingFrameSizeError(kFrameData, header));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net