Move DownloadResourceHandler to content.

chrome/browser/renderer_host/download_resource_handler.cc

Index: chrome/browser/renderer_host/download_resource_handler.cc
===================================================================
--- chrome/browser/renderer_host/download_resource_handler.cc	(revision 96829)
+++ chrome/browser/renderer_host/download_resource_handler.cc	(working copy)
@@ -1,265 +0,0 @@
-// Copyright (c) 2011 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 "chrome/browser/renderer_host/download_resource_handler.h"
-
-#include <string>
-
-#include "base/logging.h"
-#include "base/metrics/histogram.h"
-#include "base/metrics/stats_counters.h"
-#include "base/stringprintf.h"
-#include "chrome/browser/download/download_util.h"
-#include "content/browser/browser_thread.h"
-#include "content/browser/download/download_create_info.h"
-#include "content/browser/download/download_file_manager.h"
-#include "content/browser/download/download_item.h"
-#include "content/browser/download/download_request_handle.h"
-#include "content/browser/renderer_host/global_request_id.h"
-#include "content/browser/renderer_host/resource_dispatcher_host.h"
-#include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
-#include "content/common/resource_response.h"
-#include "net/base/io_buffer.h"
-#include "net/http/http_response_headers.h"
-#include "net/url_request/url_request_context.h"
-
-DownloadResourceHandler::DownloadResourceHandler(
-    ResourceDispatcherHost* rdh,
-    int render_process_host_id,
-    int render_view_id,
-    int request_id,
-    const GURL& url,
-    DownloadFileManager* download_file_manager,
-    net::URLRequest* request,
-    bool save_as,
-    const DownloadSaveInfo& save_info)
-    : download_id_(-1),
-      global_id_(render_process_host_id, request_id),
-      render_view_id_(render_view_id),
-      content_length_(0),
-      download_file_manager_(download_file_manager),
-      request_(request),
-      save_as_(save_as),
-      save_info_(save_info),
-      buffer_(new DownloadBuffer),
-      rdh_(rdh),
-      is_paused_(false) {
-  download_util::RecordDownloadCount(download_util::UNTHROTTLED_COUNT);
-}
-
-bool DownloadResourceHandler::OnUploadProgress(int request_id,
-                                               uint64 position,
-                                               uint64 size) {
-  return true;
-}
-
-// Not needed, as this event handler ought to be the final resource.
-bool DownloadResourceHandler::OnRequestRedirected(int request_id,
-                                                  const GURL& url,
-                                                  ResourceResponse* response,
-                                                  bool* defer) {
-  return true;
-}
-
-// Send the download creation information to the download thread.
-bool DownloadResourceHandler::OnResponseStarted(int request_id,
-                                                ResourceResponse* response) {
-  VLOG(20) << __FUNCTION__ << "()" << DebugString()
-           << " request_id = " << request_id;
-  download_start_time_ = base::TimeTicks::Now();
-  std::string content_disposition;
-  request_->GetResponseHeaderByName("content-disposition",
-                                    &content_disposition);
-  set_content_disposition(content_disposition);
-  set_content_length(response->response_head.content_length);
-
-  const ResourceDispatcherHostRequestInfo* request_info =
-    ResourceDispatcherHost::InfoForRequest(request_);
-
-  download_id_ = download_file_manager_->GetNextId();
-
-  // Deleted in DownloadManager.
-  DownloadCreateInfo* info = new DownloadCreateInfo;
-  info->url_chain = request_->url_chain();
-  info->referrer_url = GURL(request_->referrer());
-  info->start_time = base::Time::Now();
-  info->received_bytes = 0;
-  info->total_bytes = content_length_;
-  info->state = DownloadItem::IN_PROGRESS;
-  info->download_id = download_id_;
-  info->has_user_gesture = request_info->has_user_gesture();
-  info->request_handle = DownloadRequestHandle(rdh_,
-                                               global_id_.child_id,
-                                               render_view_id_,
-                                               global_id_.request_id);
-  info->content_disposition = content_disposition_;
-  info->mime_type = response->response_head.mime_type;
-  download_util::RecordDownloadMimeType(info->mime_type);
-  // TODO(ahendrickson) -- Get the last modified time and etag, so we can
-  // resume downloading.
-
-  std::string content_type_header;
-  if (!response->response_head.headers ||
-      !response->response_head.headers->GetMimeType(&content_type_header))
-    content_type_header = "";
-  info->original_mime_type = content_type_header;
-
-  info->prompt_user_for_save_location =
-      save_as_ && save_info_.file_path.empty();
-  info->referrer_charset = request_->context()->referrer_charset();
-  info->save_info = save_info_;
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      NewRunnableMethod(
-          download_file_manager_, &DownloadFileManager::StartDownload, info));
-
-  // We can't start saving the data before we create the file on disk.
-  // The request will be un-paused in DownloadFileManager::CreateDownloadFile.
-  rdh_->PauseRequest(global_id_.child_id, global_id_.request_id, true);
-
-  return true;
-}
-
-bool DownloadResourceHandler::OnWillStart(int request_id,
-                                          const GURL& url,
-                                          bool* defer) {
-  return true;
-}
-
-// Create a new buffer, which will be handed to the download thread for file
-// writing and deletion.
-bool DownloadResourceHandler::OnWillRead(int request_id, net::IOBuffer** buf,
-                                         int* buf_size, int min_size) {
-  DCHECK(buf && buf_size);
-  if (!read_buffer_) {
-    *buf_size = min_size < 0 ? kReadBufSize : min_size;
-    read_buffer_ = new net::IOBuffer(*buf_size);
-  }
-  *buf = read_buffer_.get();
-  return true;
-}
-
-// Pass the buffer to the download file writer.
-bool DownloadResourceHandler::OnReadCompleted(int request_id, int* bytes_read) {
-  if (!*bytes_read)
-    return true;
-  DCHECK(read_buffer_);
-  base::AutoLock auto_lock(buffer_->lock);
-  bool need_update = buffer_->contents.empty();
-
-  // We are passing ownership of this buffer to the download file manager.
-  net::IOBuffer* buffer = NULL;
-  read_buffer_.swap(&buffer);
-  buffer_->contents.push_back(std::make_pair(buffer, *bytes_read));
-  if (need_update) {
-    BrowserThread::PostTask(
-        BrowserThread::FILE, FROM_HERE,
-        NewRunnableMethod(download_file_manager_,
-                          &DownloadFileManager::UpdateDownload,
-                          download_id_,
-                          buffer_.get()));
-  }
-
-  // We schedule a pause outside of the read loop if there is too much file
-  // writing work to do.
-  if (buffer_->contents.size() > kLoadsToWrite)
-    StartPauseTimer();
-
-  return true;
-}
-
-bool DownloadResourceHandler::OnResponseCompleted(
-    int request_id,
-    const net::URLRequestStatus& status,
-    const std::string& security_info) {
-  VLOG(20) << __FUNCTION__ << "()" << DebugString()
-           << " request_id = " << request_id
-           << " status.status() = " << status.status()
-           << " status.os_error() = " << status.os_error();
-  int error_code = (status.status() == net::URLRequestStatus::FAILED) ?
-      status.os_error() : 0;
-  // We transfer ownership to |DownloadFileManager| to delete |buffer_|,
-  // so that any functions queued up on the FILE thread are executed
-  // before deletion.
-  BrowserThread::PostTask(
-      BrowserThread::FILE, FROM_HERE,
-      NewRunnableMethod(download_file_manager_,
-                        &DownloadFileManager::OnResponseCompleted,
-                        download_id_,
-                        buffer_.release(),
-                        error_code,
-                        security_info));
-  read_buffer_ = NULL;
-  return true;
-}
-
-void DownloadResourceHandler::OnRequestClosed() {
-  UMA_HISTOGRAM_TIMES("SB2.DownloadDuration",
-                      base::TimeTicks::Now() - download_start_time_);
-}
-
-// If the content-length header is not present (or contains something other
-// than numbers), the incoming content_length is -1 (unknown size).
-// Set the content length to 0 to indicate unknown size to DownloadManager.
-void DownloadResourceHandler::set_content_length(const int64& content_length) {
-  content_length_ = 0;
-  if (content_length > 0)
-    content_length_ = content_length;
-}
-
-void DownloadResourceHandler::set_content_disposition(
-    const std::string& content_disposition) {
-  content_disposition_ = content_disposition;
-}
-
-void DownloadResourceHandler::CheckWriteProgress() {
-  if (!buffer_.get())
-    return;  // The download completed while we were waiting to run.
-
-  size_t contents_size;
-  {
-    base::AutoLock lock(buffer_->lock);
-    contents_size = buffer_->contents.size();
-  }
-
-  bool should_pause = contents_size > kLoadsToWrite;
-
-  // We'll come back later and see if it's okay to unpause the request.
-  if (should_pause)
-    StartPauseTimer();
-
-  if (is_paused_ != should_pause) {
-    rdh_->PauseRequest(global_id_.child_id, global_id_.request_id,
-                       should_pause);
-    is_paused_ = should_pause;
-  }
-}
-
-DownloadResourceHandler::~DownloadResourceHandler() {
-}
-
-void DownloadResourceHandler::StartPauseTimer() {
-  if (!pause_timer_.IsRunning())
-    pause_timer_.Start(base::TimeDelta::FromMilliseconds(kThrottleTimeMs), this,
-                       &DownloadResourceHandler::CheckWriteProgress);
-}
-
-std::string DownloadResourceHandler::DebugString() const {
-  return base::StringPrintf("{"
-                            " url_ = " "\"%s\""
-                            " download_id_ = " "%d"
-                            " global_id_ = {"
-                            " child_id = " "%d"
-                            " request_id = " "%d"
-                            " }"
-                            " render_view_id_ = " "%d"
-                            " save_info_.file_path = \"%" PRFilePath "\""
-                            " }",
-                            request_->url().spec().c_str(),
-                            download_id_,
-                            global_id_.child_id,
-                            global_id_.request_id,
-                            render_view_id_,
-                            save_info_.file_path.value().c_str());
-}