Revert of Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/decoder/frame_parts_collector.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_HTTP2_DECODER_FRAME_PARTS_COLLECTOR_H_
-#define NET_HTTP2_DECODER_FRAME_PARTS_COLLECTOR_H_
-
-// FramePartsCollector is a base class for Http2FrameDecoderListener
-// implementations that create one FrameParts instance for each decoded frame.
-
-#include <stddef.h>
-
-#include <memory>
-#include <vector>
-
-#include "net/http2/decoder/frame_parts.h"
-#include "net/http2/decoder/http2_frame_decoder_listener.h"
-#include "net/http2/decoder/http2_frame_decoder_listener_test_util.h"
-#include "net/http2/http2_structures.h"
-
-namespace net {
-namespace test {
-
-class FramePartsCollector : public FailingHttp2FrameDecoderListener {
- public:
-  FramePartsCollector();
-  ~FramePartsCollector() override;
-
-  // Toss out the collected data.
-  void Reset();
-
-  // Returns true if has started recording the info for a frame and has not yet
-  // finished doing so.
-  bool IsInProgress() const { return current_frame_ != nullptr; }
-
-  // Returns the FrameParts instance into which we're currently recording
-  // callback info if IsInProgress, else nullptr.
-  const FrameParts* current_frame() const { return current_frame_.get(); }
-
-  // Returns the completely collected FrameParts instances.
-  const std::vector<std::unique_ptr<FrameParts>>& collected_frames() const {
-    return collected_frames_;
-  }
-
-  // Returns the number of completely collected FrameParts instances.
-  size_t size() const { return collected_frames_.size(); }
-
-  // Returns the n'th frame, where 0 is the oldest of the collected frames,
-  // and n==size() is the frame currently being collected, if there is one.
-  // Returns nullptr if the requested index is not valid.
-  const FrameParts* frame(size_t n) const;
-
- protected:
-  // In support of OnFrameHeader, set the header that we expect to be used in
-  // the next call.
-  // TODO(jamessynge): Remove ExpectFrameHeader et al. once done with supporting
-  // SpdyFramer's exact states.
-  void ExpectFrameHeader(const Http2FrameHeader& header);
-
-  // For use in implementing On*Start methods of Http2FrameDecoderListener,
-  // returns a FrameParts instance, which will be newly created if
-  // IsInProgress==false (which the caller should ensure), else will be the
-  // current_frame(); never returns nullptr.
-  // If called when IsInProgress==true, a test failure will be recorded.
-  Http2FrameDecoderListener* StartFrame(const Http2FrameHeader& header);
-
-  // For use in implementing On* callbacks, such as OnPingAck, that are the only
-  // call expected for the frame being decoded; not for On*Start methods.
-  // Returns a FrameParts instance, which will be newly created if
-  // IsInProgress==false (which the caller should ensure), else will be the
-  // current_frame(); never returns nullptr.
-  // If called when IsInProgress==true, a test failure will be recorded.
-  Http2FrameDecoderListener* StartAndEndFrame(const Http2FrameHeader& header);
-
-  // If IsInProgress==true, returns the FrameParts into which the current
-  // frame is being recorded; else records a test failure and returns
-  // failing_listener_, which will record a test failure when any of its
-  // On* methods is called.
-  Http2FrameDecoderListener* CurrentFrame();
-
-  // For use in implementing On*End methods, pushes the current frame onto
-  // the vector of completed frames, and returns a pointer to it for recording
-  // the info in the final call. If IsInProgress==false, records a test failure
-  // and returns failing_listener_, which will record a test failure when any
-  // of its On* methods is called.
-  Http2FrameDecoderListener* EndFrame();
-
-  // For use in implementing OnPaddingTooLong and OnFrameSizeError, is
-  // equivalent to EndFrame() if IsInProgress==true, else equivalent to
-  // StartAndEndFrame().
-  Http2FrameDecoderListener* FrameError(const Http2FrameHeader& header);
-
- private:
-  // Returns the mutable FrameParts instance into which we're currently
-  // recording callback info if IsInProgress, else nullptr.
-  FrameParts* current_frame() { return current_frame_.get(); }
-
-  // If expected header is set, verify that it matches the header param.
-  // TODO(jamessynge): Remove TestExpectedHeader et al. once done
-  // with supporting SpdyFramer's exact states.
-  void TestExpectedHeader(const Http2FrameHeader& header);
-
-  std::unique_ptr<FrameParts> current_frame_;
-  std::vector<std::unique_ptr<FrameParts>> collected_frames_;
-  FailingHttp2FrameDecoderListener failing_listener_;
-
-  // TODO(jamessynge): Remove expected_header_ et al. once done with supporting
-  // SpdyFramer's exact states.
-  Http2FrameHeader expected_header_;
-  bool expected_header_set_ = false;
-};
-
-}  // namespace test
-}  // namespace net
-
-#endif  // NET_HTTP2_DECODER_FRAME_PARTS_COLLECTOR_H_