Revert "reland of Improve linearized pdf load/show time."

pdf/url_loader_wrapper_impl.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 PDF_URL_LOADER_WRAPPER_IMPL_H_
-#define PDF_URL_LOADER_WRAPPER_IMPL_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "pdf/url_loader_wrapper.h"
-#include "ppapi/cpp/url_loader.h"
-#include "ppapi/utility/completion_callback_factory.h"
-#include "ui/gfx/range/range.h"
-
-namespace pp {
-class Instance;
-};
-
-namespace chrome_pdf {
-
-class URLLoaderWrapperImpl : public URLLoaderWrapper {
- public:
-  URLLoaderWrapperImpl(pp::Instance* plugin_instance,
-                       const pp::URLLoader& url_loader);
-  ~URLLoaderWrapperImpl() override;
-
-  // URLLoaderWrapper overrides:
-  int GetContentLength() const override;
-  bool IsAcceptRangesBytes() const override;
-  bool IsContentEncoded() const override;
-  std::string GetContentType() const override;
-  std::string GetContentDisposition() const override;
-  int GetStatusCode() const override;
-  bool IsMultipart() const override;
-  bool GetByteRange(int* start, int* end) const override;
-  bool GetDownloadProgress(int64_t* bytes_received,
-                           int64_t* total_bytes_to_be_received) const override;
-  void Close() override;
-  void OpenRange(const std::string& url,
-                 const std::string& referrer_url,
-                 uint32_t position,
-                 uint32_t size,
-                 const pp::CompletionCallback& cc) override;
-  void ReadResponseBody(char* buffer,
-                        int buffer_size,
-                        const pp::CompletionCallback& cc) override;
-
-  void SetResponseHeaders(const std::string& response_headers);
-
- private:
-  class ReadStarter;
-
-  void SetHeadersFromLoader();
-  void ParseHeaders();
-  void DidOpen(int32_t result);
-  void DidRead(int32_t result);
-
-  void ReadResponseBodyImpl();
-
-  pp::Instance* const plugin_instance_;
-  pp::URLLoader url_loader_;
-  std::string response_headers_;
-
-  int content_length_ = -1;
-  bool accept_ranges_bytes_ = false;
-  bool content_encoded_ = false;
-  std::string content_type_;
-  std::string content_disposition_;
-  std::string multipart_boundary_;
-  gfx::Range byte_range_ = gfx::Range::InvalidRange();
-  bool is_multipart_ = false;
-  char* buffer_ = nullptr;
-  uint32_t buffer_size_ = 0;
-  bool multi_part_processed_ = false;
-
-  pp::CompletionCallback did_open_callback_;
-  pp::CompletionCallback did_read_callback_;
-  pp::CompletionCallbackFactory<URLLoaderWrapperImpl> callback_factory_;
-
-  std::unique_ptr<ReadStarter> read_starter_;
-
-  DISALLOW_COPY_AND_ASSIGN(URLLoaderWrapperImpl);
-};
-
-}  // namespace chrome_pdf
-
-#endif  // PDF_URL_LOADER_WRAPPER_IMPL_H_