Revert of mandoline: Add back/forward support and UI.

components/web_view/url_request_cloneable.cc

-// Copyright 2015 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 "components/web_view/url_request_cloneable.h"
-
-#include "base/logging.h"
-#include "mojo/common/data_pipe_utils.h"
-
-namespace web_view {
-
-URLRequestCloneable::URLRequestCloneable(mojo::URLRequestPtr original_request)
-    : url_(original_request->url),
-      method_(original_request->method),
-      headers_(original_request->headers.Pass()),
-      response_body_buffer_size_(original_request->response_body_buffer_size),
-      auto_follow_redirects_(original_request->auto_follow_redirects),
-      bypass_cache_(original_request->bypass_cache),
-      original_body_null_(original_request->body.is_null()),
-      body_(original_request->body.size()) {
-  // TODO(erg): Maybe we can do some sort of async copy here?
-  for (size_t i = 0; i < original_request->body.size(); ++i) {
-    mojo::common::BlockingCopyToString(original_request->body[i].Pass(),
-                                       &body_[i]);
-  }
-}
-
-URLRequestCloneable::~URLRequestCloneable() {}
-
-mojo::URLRequestPtr URLRequestCloneable::Clone() const {
-  mojo::URLRequestPtr request = mojo::URLRequest::New();
-  request->url = url_;
-  request->method = method_;
-  request->headers = headers_.Clone();
-  request->response_body_buffer_size = response_body_buffer_size_;
-  request->auto_follow_redirects = auto_follow_redirects_;
-  request->bypass_cache = bypass_cache_;
-
-  if (!original_body_null_) {
-    request->body =
-        mojo::Array<mojo::ScopedDataPipeConsumerHandle>(body_.size());
-    for (size_t i = 0; i < body_.size(); ++i) {
-      uint32_t num_bytes = body_[i].size();
-      MojoCreateDataPipeOptions options;
-      options.struct_size = sizeof(MojoCreateDataPipeOptions);
-      options.flags = MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE;
-      options.element_num_bytes = 1;
-      options.capacity_num_bytes = num_bytes;
-      mojo::DataPipe data_pipe(options);
-      request->body[i] = data_pipe.consumer_handle.Pass();
-      WriteDataRaw(data_pipe.producer_handle.get(), body_[i].data(), &num_bytes,
-                   MOJO_WRITE_DATA_FLAG_ALL_OR_NONE);
-      DCHECK_EQ(num_bytes, body_[i].size());
-    }
-  }
-
-  return request.Pass();
-}
-
-}  // namespace web_view