Port WebSockets to Mojo IPC

content/browser/renderer_host/websocket_host.cc

Index: content/browser/renderer_host/websocket_host.cc
diff --git a/content/browser/renderer_host/websocket_host.cc b/content/browser/renderer_host/websocket_host.cc
deleted file mode 100644
index cce4485b3d4d67801e5037ee042d88fd5aaaaa41..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/websocket_host.cc
+++ /dev/null
@@ -1,583 +0,0 @@
-// Copyright 2013 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 "content/browser/renderer_host/websocket_host.h"
-
-#include <inttypes.h>
-
-#include <utility>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/memory/ptr_util.h"
-#include "base/single_thread_task_runner.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "content/browser/bad_message.h"
-#include "content/browser/renderer_host/websocket_blob_sender.h"
-#include "content/browser/renderer_host/websocket_dispatcher_host.h"
-#include "content/browser/ssl/ssl_error_handler.h"
-#include "content/browser/ssl/ssl_manager.h"
-#include "content/common/websocket_messages.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/storage_partition.h"
-#include "ipc/ipc_message_macros.h"
-#include "net/base/net_errors.h"
-#include "net/http/http_request_headers.h"
-#include "net/http/http_response_headers.h"
-#include "net/http/http_util.h"
-#include "net/ssl/ssl_info.h"
-#include "net/websockets/websocket_channel.h"
-#include "net/websockets/websocket_errors.h"
-#include "net/websockets/websocket_event_interface.h"
-#include "net/websockets/websocket_frame.h"  // for WebSocketFrameHeader::OpCode
-#include "net/websockets/websocket_handshake_request_info.h"
-#include "net/websockets/websocket_handshake_response_info.h"
-#include "url/origin.h"
-
-namespace content {
-
-namespace {
-
-typedef net::WebSocketEventInterface::ChannelState ChannelState;
-
-// Convert a content::WebSocketMessageType to a
-// net::WebSocketFrameHeader::OpCode
-net::WebSocketFrameHeader::OpCode MessageTypeToOpCode(
-    WebSocketMessageType type) {
-  DCHECK(type == WEB_SOCKET_MESSAGE_TYPE_CONTINUATION ||
-         type == WEB_SOCKET_MESSAGE_TYPE_TEXT ||
-         type == WEB_SOCKET_MESSAGE_TYPE_BINARY);
-  typedef net::WebSocketFrameHeader::OpCode OpCode;
-  // These compile asserts verify that the same underlying values are used for
-  // both types, so we can simply cast between them.
-  static_assert(static_cast<OpCode>(WEB_SOCKET_MESSAGE_TYPE_CONTINUATION) ==
-                    net::WebSocketFrameHeader::kOpCodeContinuation,
-                "enum values must match for opcode continuation");
-  static_assert(static_cast<OpCode>(WEB_SOCKET_MESSAGE_TYPE_TEXT) ==
-                    net::WebSocketFrameHeader::kOpCodeText,
-                "enum values must match for opcode text");
-  static_assert(static_cast<OpCode>(WEB_SOCKET_MESSAGE_TYPE_BINARY) ==
-                    net::WebSocketFrameHeader::kOpCodeBinary,
-                "enum values must match for opcode binary");
-  return static_cast<OpCode>(type);
-}
-
-WebSocketMessageType OpCodeToMessageType(
-    net::WebSocketFrameHeader::OpCode opCode) {
-  DCHECK(opCode == net::WebSocketFrameHeader::kOpCodeContinuation ||
-         opCode == net::WebSocketFrameHeader::kOpCodeText ||
-         opCode == net::WebSocketFrameHeader::kOpCodeBinary);
-  // This cast is guaranteed valid by the static_assert() statements above.
-  return static_cast<WebSocketMessageType>(opCode);
-}
-
-ChannelState StateCast(WebSocketDispatcherHost::WebSocketHostState host_state) {
-  const WebSocketDispatcherHost::WebSocketHostState WEBSOCKET_HOST_ALIVE =
-      WebSocketDispatcherHost::WEBSOCKET_HOST_ALIVE;
-  const WebSocketDispatcherHost::WebSocketHostState WEBSOCKET_HOST_DELETED =
-      WebSocketDispatcherHost::WEBSOCKET_HOST_DELETED;
-
-  DCHECK(host_state == WEBSOCKET_HOST_ALIVE ||
-         host_state == WEBSOCKET_HOST_DELETED);
-  // These compile asserts verify that we can get away with using static_cast<>
-  // for the conversion.
-  static_assert(static_cast<ChannelState>(WEBSOCKET_HOST_ALIVE) ==
-                    net::WebSocketEventInterface::CHANNEL_ALIVE,
-                "enum values must match for state_alive");
-  static_assert(static_cast<ChannelState>(WEBSOCKET_HOST_DELETED) ==
-                    net::WebSocketEventInterface::CHANNEL_DELETED,
-                "enum values must match for state_deleted");
-  return static_cast<ChannelState>(host_state);
-}
-
-// Implementation of WebSocketBlobSender::Channel
-class SendChannelImpl final : public WebSocketBlobSender::Channel {
- public:
-  explicit SendChannelImpl(net::WebSocketChannel* channel)
-      : channel_(channel) {}
-
-  // Implementation of WebSocketBlobSender::Channel
-  size_t GetSendQuota() const override {
-    return static_cast<size_t>(channel_->current_send_quota());
-  }
-
-  ChannelState SendFrame(bool fin, const std::vector<char>& data) override {
-    int opcode = first_frame_ ? net::WebSocketFrameHeader::kOpCodeBinary
-                              : net::WebSocketFrameHeader::kOpCodeContinuation;
-    first_frame_ = false;
-    return channel_->SendFrame(fin, opcode, data);
-  }
-
- private:
-  net::WebSocketChannel* channel_;
-  bool first_frame_ = true;
-
-  DISALLOW_COPY_AND_ASSIGN(SendChannelImpl);
-};
-
-}  // namespace
-
-// Implementation of net::WebSocketEventInterface. Receives events from our
-// WebSocketChannel object. Each event is translated to an IPC and sent to the
-// renderer or child process via WebSocketDispatcherHost.
-class WebSocketHost::WebSocketEventHandler final
-    : public net::WebSocketEventInterface {
- public:
-  WebSocketEventHandler(WebSocketDispatcherHost* dispatcher,
-                        WebSocketHost* host,
-                        int routing_id,
-                        int render_frame_id);
-  ~WebSocketEventHandler() override;
-
-  // net::WebSocketEventInterface implementation
-
-  ChannelState OnAddChannelResponse(const std::string& selected_subprotocol,
-                                    const std::string& extensions) override;
-  ChannelState OnDataFrame(bool fin,
-                           WebSocketMessageType type,
-                           const std::vector<char>& data) override;
-  ChannelState OnClosingHandshake() override;
-  ChannelState OnFlowControl(int64_t quota) override;
-  ChannelState OnDropChannel(bool was_clean,
-                             uint16_t code,
-                             const std::string& reason) override;
-  ChannelState OnFailChannel(const std::string& message) override;
-  ChannelState OnStartOpeningHandshake(
-      std::unique_ptr<net::WebSocketHandshakeRequestInfo> request) override;
-  ChannelState OnFinishOpeningHandshake(
-      std::unique_ptr<net::WebSocketHandshakeResponseInfo> response) override;
-  ChannelState OnSSLCertificateError(
-      std::unique_ptr<net::WebSocketEventInterface::SSLErrorCallbacks>
-          callbacks,
-      const GURL& url,
-      const net::SSLInfo& ssl_info,
-      bool fatal) override;
-
- private:
-  class SSLErrorHandlerDelegate final : public SSLErrorHandler::Delegate {
-   public:
-    SSLErrorHandlerDelegate(
-        std::unique_ptr<net::WebSocketEventInterface::SSLErrorCallbacks>
-            callbacks);
-    ~SSLErrorHandlerDelegate() override;
-
-    base::WeakPtr<SSLErrorHandler::Delegate> GetWeakPtr();
-
-    // SSLErrorHandler::Delegate methods
-    void CancelSSLRequest(int error, const net::SSLInfo* ssl_info) override;
-    void ContinueSSLRequest() override;
-
-   private:
-    std::unique_ptr<net::WebSocketEventInterface::SSLErrorCallbacks> callbacks_;
-    base::WeakPtrFactory<SSLErrorHandlerDelegate> weak_ptr_factory_;
-
-    DISALLOW_COPY_AND_ASSIGN(SSLErrorHandlerDelegate);
-  };
-
-  WebSocketDispatcherHost* const dispatcher_;
-  WebSocketHost* const host_;
-  const int routing_id_;
-  const int render_frame_id_;
-  std::unique_ptr<SSLErrorHandlerDelegate> ssl_error_handler_delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebSocketEventHandler);
-};
-
-WebSocketHost::WebSocketEventHandler::WebSocketEventHandler(
-    WebSocketDispatcherHost* dispatcher,
-    WebSocketHost* host,
-    int routing_id,
-    int render_frame_id)
-    : dispatcher_(dispatcher),
-      host_(host),
-      routing_id_(routing_id),
-      render_frame_id_(render_frame_id) {}
-
-WebSocketHost::WebSocketEventHandler::~WebSocketEventHandler() {
-  DVLOG(1) << "WebSocketEventHandler destroyed routing_id=" << routing_id_;
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnAddChannelResponse(
-    const std::string& selected_protocol,
-    const std::string& extensions) {
-  DVLOG(3) << "WebSocketEventHandler::OnAddChannelResponse"
-           << " routing_id=" << routing_id_
-           << " selected_protocol=\"" << selected_protocol << "\""
-           << " extensions=\"" << extensions << "\"";
-
-  return StateCast(dispatcher_->SendAddChannelResponse(
-      routing_id_, selected_protocol, extensions));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnDataFrame(
-    bool fin,
-    net::WebSocketFrameHeader::OpCode type,
-    const std::vector<char>& data) {
-  DVLOG(3) << "WebSocketEventHandler::OnDataFrame"
-           << " routing_id=" << routing_id_ << " fin=" << fin
-           << " type=" << type << " data is " << data.size() << " bytes";
-
-  return StateCast(dispatcher_->SendFrame(routing_id_, fin,
-                                          OpCodeToMessageType(type), data));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnClosingHandshake() {
-  DVLOG(3) << "WebSocketEventHandler::OnClosingHandshake"
-           << " routing_id=" << routing_id_;
-
-  return StateCast(dispatcher_->NotifyClosingHandshake(routing_id_));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnFlowControl(
-    int64_t quota) {
-  DVLOG(3) << "WebSocketEventHandler::OnFlowControl"
-           << " routing_id=" << routing_id_ << " quota=" << quota;
-
-  if (host_->blob_sender_)
-    host_->blob_sender_->OnNewSendQuota();
-  return StateCast(dispatcher_->SendFlowControl(routing_id_, quota));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnDropChannel(
-    bool was_clean,
-    uint16_t code,
-    const std::string& reason) {
-  DVLOG(3) << "WebSocketEventHandler::OnDropChannel"
-           << " routing_id=" << routing_id_ << " was_clean=" << was_clean
-           << " code=" << code << " reason=\"" << reason << "\"";
-
-  return StateCast(
-      dispatcher_->DoDropChannel(routing_id_, was_clean, code, reason));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnFailChannel(
-    const std::string& message) {
-  DVLOG(3) << "WebSocketEventHandler::OnFailChannel"
-           << " routing_id=" << routing_id_ << " message=\"" << message << "\"";
-
-  return StateCast(dispatcher_->NotifyFailure(routing_id_, message));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnStartOpeningHandshake(
-    std::unique_ptr<net::WebSocketHandshakeRequestInfo> request) {
-  bool should_send = dispatcher_->CanReadRawCookies();
-  DVLOG(3) << "WebSocketEventHandler::OnStartOpeningHandshake "
-           << "should_send=" << should_send;
-
-  if (!should_send)
-    return WebSocketEventInterface::CHANNEL_ALIVE;
-
-  WebSocketHandshakeRequest request_to_pass;
-  request_to_pass.url.Swap(&request->url);
-  net::HttpRequestHeaders::Iterator it(request->headers);
-  while (it.GetNext())
-    request_to_pass.headers.push_back(std::make_pair(it.name(), it.value()));
-  request_to_pass.headers_text =
-      base::StringPrintf("GET %s HTTP/1.1\r\n",
-                         request_to_pass.url.spec().c_str()) +
-      request->headers.ToString();
-  request_to_pass.request_time = request->request_time;
-
-  return StateCast(
-      dispatcher_->NotifyStartOpeningHandshake(routing_id_, request_to_pass));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnFinishOpeningHandshake(
-    std::unique_ptr<net::WebSocketHandshakeResponseInfo> response) {
-  bool should_send = dispatcher_->CanReadRawCookies();
-  DVLOG(3) << "WebSocketEventHandler::OnFinishOpeningHandshake "
-           << "should_send=" << should_send;
-
-  if (!should_send)
-    return WebSocketEventInterface::CHANNEL_ALIVE;
-
-  WebSocketHandshakeResponse response_to_pass;
-  response_to_pass.url.Swap(&response->url);
-  response_to_pass.status_code = response->status_code;
-  response_to_pass.status_text.swap(response->status_text);
-  size_t iter = 0;
-  std::string name, value;
-  while (response->headers->EnumerateHeaderLines(&iter, &name, &value))
-    response_to_pass.headers.push_back(std::make_pair(name, value));
-  response_to_pass.headers_text =
-      net::HttpUtil::ConvertHeadersBackToHTTPResponse(
-          response->headers->raw_headers());
-  response_to_pass.response_time = response->response_time;
-
-  return StateCast(
-      dispatcher_->NotifyFinishOpeningHandshake(routing_id_, response_to_pass));
-}
-
-ChannelState WebSocketHost::WebSocketEventHandler::OnSSLCertificateError(
-    std::unique_ptr<net::WebSocketEventInterface::SSLErrorCallbacks> callbacks,
-    const GURL& url,
-    const net::SSLInfo& ssl_info,
-    bool fatal) {
-  DVLOG(3) << "WebSocketEventHandler::OnSSLCertificateError"
-           << " routing_id=" << routing_id_ << " url=" << url.spec()
-           << " cert_status=" << ssl_info.cert_status << " fatal=" << fatal;
-  ssl_error_handler_delegate_.reset(
-      new SSLErrorHandlerDelegate(std::move(callbacks)));
-  SSLManager::OnSSLCertificateSubresourceError(
-      ssl_error_handler_delegate_->GetWeakPtr(), url,
-      dispatcher_->render_process_id(), render_frame_id_, ssl_info, fatal);
-  // The above method is always asynchronous.
-  return WebSocketEventInterface::CHANNEL_ALIVE;
-}
-
-WebSocketHost::WebSocketEventHandler::SSLErrorHandlerDelegate::
-    SSLErrorHandlerDelegate(
-        std::unique_ptr<net::WebSocketEventInterface::SSLErrorCallbacks>
-            callbacks)
-    : callbacks_(std::move(callbacks)), weak_ptr_factory_(this) {}
-
-WebSocketHost::WebSocketEventHandler::SSLErrorHandlerDelegate::
-    ~SSLErrorHandlerDelegate() {}
-
-base::WeakPtr<SSLErrorHandler::Delegate>
-WebSocketHost::WebSocketEventHandler::SSLErrorHandlerDelegate::GetWeakPtr() {
-  return weak_ptr_factory_.GetWeakPtr();
-}
-
-void WebSocketHost::WebSocketEventHandler::SSLErrorHandlerDelegate::
-    CancelSSLRequest(int error, const net::SSLInfo* ssl_info) {
-  DVLOG(3) << "SSLErrorHandlerDelegate::CancelSSLRequest"
-           << " error=" << error
-           << " cert_status=" << (ssl_info ? ssl_info->cert_status
-                                           : static_cast<net::CertStatus>(-1));
-  callbacks_->CancelSSLRequest(error, ssl_info);
-}
-
-void WebSocketHost::WebSocketEventHandler::SSLErrorHandlerDelegate::
-    ContinueSSLRequest() {
-  DVLOG(3) << "SSLErrorHandlerDelegate::ContinueSSLRequest";
-  callbacks_->ContinueSSLRequest();
-}
-
-WebSocketHost::WebSocketHost(int routing_id,
-                             WebSocketDispatcherHost* dispatcher,
-                             net::URLRequestContext* url_request_context,
-                             base::TimeDelta delay)
-    : dispatcher_(dispatcher),
-      url_request_context_(url_request_context),
-      routing_id_(routing_id),
-      delay_(delay),
-      pending_flow_control_quota_(0),
-      handshake_succeeded_(false),
-      weak_ptr_factory_(this) {
-  DVLOG(1) << "WebSocketHost: created routing_id=" << routing_id;
-}
-
-WebSocketHost::~WebSocketHost() {}
-
-void WebSocketHost::GoAway() {
-  OnDropChannel(false, static_cast<uint16_t>(net::kWebSocketErrorGoingAway),
-                "");
-}
-
-bool WebSocketHost::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(WebSocketHost, message)
-    IPC_MESSAGE_HANDLER(WebSocketHostMsg_AddChannelRequest, OnAddChannelRequest)
-    IPC_MESSAGE_HANDLER(WebSocketHostMsg_SendBlob, OnSendBlob)
-    IPC_MESSAGE_HANDLER(WebSocketMsg_SendFrame, OnSendFrame)
-    IPC_MESSAGE_HANDLER(WebSocketMsg_FlowControl, OnFlowControl)
-    IPC_MESSAGE_HANDLER(WebSocketMsg_DropChannel, OnDropChannel)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void WebSocketHost::OnAddChannelRequest(
-    const GURL& socket_url,
-    const std::vector<std::string>& requested_protocols,
-    const url::Origin& origin,
-    int render_frame_id) {
-  DVLOG(3) << "WebSocketHost::OnAddChannelRequest"
-           << " routing_id=" << routing_id_ << " socket_url=\"" << socket_url
-           << "\" requested_protocols=\""
-           << base::JoinString(requested_protocols, ", ") << "\" origin=\""
-           << origin << "\"";
-
-  DCHECK(!channel_);
-  if (delay_ > base::TimeDelta()) {
-    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
-        FROM_HERE,
-        base::Bind(&WebSocketHost::AddChannel, weak_ptr_factory_.GetWeakPtr(),
-                   socket_url, requested_protocols, origin, render_frame_id),
-        delay_);
-  } else {
-    AddChannel(socket_url, requested_protocols, origin, render_frame_id);
-  }
-  // |this| may have been deleted here.
-}
-
-void WebSocketHost::AddChannel(
-    const GURL& socket_url,
-    const std::vector<std::string>& requested_protocols,
-    const url::Origin& origin,
-    int render_frame_id) {
-  DVLOG(3) << "WebSocketHost::AddChannel"
-           << " routing_id=" << routing_id_ << " socket_url=\"" << socket_url
-           << "\" requested_protocols=\""
-           << base::JoinString(requested_protocols, ", ") << "\" origin=\""
-           << origin << "\"";
-
-  DCHECK(!channel_);
-
-  std::unique_ptr<net::WebSocketEventInterface> event_interface(
-      new WebSocketEventHandler(dispatcher_, this, routing_id_,
-                                render_frame_id));
-  channel_.reset(new net::WebSocketChannel(std::move(event_interface),
-                                           url_request_context_));
-
-  if (pending_flow_control_quota_ > 0) {
-    // channel_->SendFlowControl(pending_flow_control_quota_) must be called
-    // after channel_->SendAddChannelRequest() below.
-    // We post OnFlowControl() here using |weak_ptr_factory_| instead of
-    // calling SendFlowControl directly, because |this| may have been deleted
-    // after channel_->SendAddChannelRequest().
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(&WebSocketHost::OnFlowControl,
-                              weak_ptr_factory_.GetWeakPtr(),
-                              pending_flow_control_quota_));
-    pending_flow_control_quota_ = 0;
-  }
-
-  channel_->SendAddChannelRequest(socket_url, requested_protocols, origin);
-  // |this| may have been deleted here.
-}
-
-void WebSocketHost::OnSendBlob(const std::string& uuid,
-                               uint64_t expected_size) {
-  DVLOG(3) << "WebSocketHost::OnSendBlob"
-           << " routing_id=" << routing_id_ << " uuid=" << uuid
-           << " expected_size=" << expected_size;
-
-  DCHECK(channel_);
-  if (blob_sender_) {
-    bad_message::ReceivedBadMessage(
-        dispatcher_, bad_message::WSH_SEND_BLOB_DURING_BLOB_SEND);
-    return;
-  }
-  blob_sender_.reset(new WebSocketBlobSender(
-      base::WrapUnique(new SendChannelImpl(channel_.get()))));
-  StoragePartition* partition = dispatcher_->storage_partition();
-  storage::FileSystemContext* file_system_context =
-      partition->GetFileSystemContext();
-
-  net::WebSocketEventInterface::ChannelState channel_state =
-      net::WebSocketEventInterface::CHANNEL_ALIVE;
-
-  // This use of base::Unretained is safe because the WebSocketBlobSender object
-  // is owned by this object and will not call it back after destruction.
-  int rv = blob_sender_->Start(
-      uuid, expected_size, dispatcher_->blob_storage_context(),
-      file_system_context,
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE).get(),
-      &channel_state,
-      base::Bind(&WebSocketHost::BlobSendComplete, base::Unretained(this)));
-  if (channel_state == net::WebSocketEventInterface::CHANNEL_ALIVE &&
-      rv != net::ERR_IO_PENDING)
-    BlobSendComplete(rv);
-  // |this| may be destroyed here.
-}
-
-void WebSocketHost::OnSendFrame(bool fin,
-                                WebSocketMessageType type,
-                                const std::vector<char>& data) {
-  DVLOG(3) << "WebSocketHost::OnSendFrame"
-           << " routing_id=" << routing_id_ << " fin=" << fin
-           << " type=" << type << " data is " << data.size() << " bytes";
-
-  DCHECK(channel_);
-  if (blob_sender_) {
-    bad_message::ReceivedBadMessage(
-        dispatcher_, bad_message::WSH_SEND_FRAME_DURING_BLOB_SEND);
-    return;
-  }
-  channel_->SendFrame(fin, MessageTypeToOpCode(type), data);
-}
-
-void WebSocketHost::OnFlowControl(int64_t quota) {
-  DVLOG(3) << "WebSocketHost::OnFlowControl"
-           << " routing_id=" << routing_id_ << " quota=" << quota;
-
-  if (!channel_) {
-    // WebSocketChannel is not yet created due to the delay introduced by
-    // per-renderer WebSocket throttling.
-    // SendFlowControl() is called after WebSocketChannel is created.
-    pending_flow_control_quota_ += quota;
-    return;
-  }
-
-  ignore_result(channel_->SendFlowControl(quota));
-}
-
-void WebSocketHost::OnDropChannel(bool was_clean,
-                                  uint16_t code,
-                                  const std::string& reason) {
-  DVLOG(3) << "WebSocketHost::OnDropChannel"
-           << " routing_id=" << routing_id_ << " was_clean=" << was_clean
-           << " code=" << code << " reason=\"" << reason << "\"";
-
-  if (!channel_) {
-    // WebSocketChannel is not yet created due to the delay introduced by
-    // per-renderer WebSocket throttling.
-    WebSocketDispatcherHost::WebSocketHostState result =
-        dispatcher_->DoDropChannel(routing_id_, false,
-                                   net::kWebSocketErrorAbnormalClosure, "");
-    DCHECK_EQ(WebSocketDispatcherHost::WEBSOCKET_HOST_DELETED, result);
-    return;
-  }
-
-  blob_sender_.reset();
-  // TODO(yhirano): Handle |was_clean| appropriately.
-  ignore_result(channel_->StartClosingHandshake(code, reason));
-}
-
-void WebSocketHost::BlobSendComplete(int result) {
-  DVLOG(3) << "WebSocketHost::BlobSendComplete"
-           << " routing_id=" << routing_id_
-           << " result=" << net::ErrorToString(result);
-
-  // All paths through this method must reset blob_sender_, so take ownership
-  // at the beginning.
-  std::unique_ptr<WebSocketBlobSender> blob_sender(std::move(blob_sender_));
-  switch (result) {
-    case net::OK:
-      ignore_result(dispatcher_->BlobSendComplete(routing_id_));
-      // |this| may be destroyed here.
-      return;
-
-    case net::ERR_UPLOAD_FILE_CHANGED: {
-      uint64_t expected_size = blob_sender->expected_size();
-      uint64_t actual_size = blob_sender->ActualSize();
-      if (expected_size != actual_size) {
-        ignore_result(dispatcher_->NotifyFailure(
-            routing_id_,
-            base::StringPrintf("Blob size mismatch; renderer size = %" PRIu64
-                               ", browser size = %" PRIu64,
-                               expected_size, actual_size)));
-        // |this| is destroyed here.
-        return;
-      }  // else fallthrough
-    }
-
-    default:
-      ignore_result(dispatcher_->NotifyFailure(
-          routing_id_,
-          "Failed to load Blob: error code = " + net::ErrorToString(result)));
-      // |this| is destroyed here.
-      return;
-  }
-}
-
-}  // namespace content