Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef NET_URL_REQUEST_URL_FETCHER_CORE_H_ |
| 6 | #define NET_URL_REQUEST_URL_FETCHER_CORE_H_ |
| 7 | |
| 8 | #include <set> |
| 9 | #include <string> |
| 10 | |
| 11 | #include "base/basictypes.h" |
| 12 | #include "base/compiler_specific.h" |
| 13 | #include "base/debug/stack_trace.h" |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 14 | #include "base/files/file_path.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 15 | #include "base/lazy_instance.h" |
| 16 | #include "base/memory/ref_counted.h" |
| 17 | #include "base/memory/scoped_ptr.h" |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 18 | #include "base/timer/timer.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 19 | #include "net/base/host_port_pair.h" |
| 20 | #include "net/http/http_request_headers.h" |
| 21 | #include "net/url_request/url_fetcher.h" |
| 22 | #include "net/url_request/url_request.h" |
| 23 | #include "net/url_request/url_request_status.h" |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 24 | #include "url/gurl.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 25 | |
| 26 | namespace base { |
| 27 | class SingleThreadTaskRunner; |
| 28 | } // namespace base |
| 29 | |
| 30 | namespace net { |
Torne (Richard Coles) | 90dce4d | 2013-05-29 14:40:03 +0100 | [diff] [blame] | 31 | class DrainableIOBuffer; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 32 | class HttpResponseHeaders; |
| 33 | class IOBuffer; |
| 34 | class URLFetcherDelegate; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 35 | class URLFetcherResponseWriter; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 36 | class URLRequestContextGetter; |
| 37 | class URLRequestThrottlerEntryInterface; |
| 38 | |
| 39 | class URLFetcherCore |
| 40 | : public base::RefCountedThreadSafe<URLFetcherCore>, |
| 41 | public URLRequest::Delegate { |
| 42 | public: |
| 43 | URLFetcherCore(URLFetcher* fetcher, |
| 44 | const GURL& original_url, |
| 45 | URLFetcher::RequestType request_type, |
| 46 | URLFetcherDelegate* d); |
| 47 | |
| 48 | // Starts the load. It's important that this not happen in the constructor |
| 49 | // because it causes the IO thread to begin AddRef()ing and Release()ing |
| 50 | // us. If our caller hasn't had time to fully construct us and take a |
| 51 | // reference, the IO thread could interrupt things, run a task, Release() |
| 52 | // us, and destroy us, leaving the caller with an already-destroyed object |
| 53 | // when construction finishes. |
| 54 | void Start(); |
| 55 | |
| 56 | // Stops any in-progress load and ensures no callback will happen. It is |
| 57 | // safe to call this multiple times. |
| 58 | void Stop(); |
| 59 | |
| 60 | // URLFetcher-like functions. |
| 61 | |
| 62 | // For POST requests, set |content_type| to the MIME type of the |
| 63 | // content and set |content| to the data to upload. |
| 64 | void SetUploadData(const std::string& upload_content_type, |
| 65 | const std::string& upload_content); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 66 | void SetUploadFilePath(const std::string& upload_content_type, |
| 67 | const base::FilePath& file_path, |
Torne (Richard Coles) | c2e0dbd | 2013-05-09 18:35:53 +0100 | [diff] [blame] | 68 | uint64 range_offset, |
| 69 | uint64 range_length, |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 70 | scoped_refptr<base::TaskRunner> file_task_runner); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 71 | void SetChunkedUpload(const std::string& upload_content_type); |
| 72 | // Adds a block of data to be uploaded in a POST body. This can only be |
| 73 | // called after Start(). |
| 74 | void AppendChunkToUpload(const std::string& data, bool is_last_chunk); |
| 75 | // |flags| are flags to apply to the load operation--these should be |
| 76 | // one or more of the LOAD_* flags defined in net/base/load_flags.h. |
| 77 | void SetLoadFlags(int load_flags); |
| 78 | int GetLoadFlags() const; |
| 79 | void SetReferrer(const std::string& referrer); |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 80 | void SetReferrerPolicy(URLRequest::ReferrerPolicy referrer_policy); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 81 | void SetExtraRequestHeaders(const std::string& extra_request_headers); |
| 82 | void AddExtraRequestHeader(const std::string& header_line); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 83 | void SetRequestContext(URLRequestContextGetter* request_context_getter); |
| 84 | // Set the URL that should be consulted for the third-party cookie |
| 85 | // blocking policy. |
| 86 | void SetFirstPartyForCookies(const GURL& first_party_for_cookies); |
| 87 | // Set the key and data callback that is used when setting the user |
| 88 | // data on any URLRequest objects this object creates. |
| 89 | void SetURLRequestUserData( |
| 90 | const void* key, |
| 91 | const URLFetcher::CreateDataCallback& create_data_callback); |
| 92 | void SetStopOnRedirect(bool stop_on_redirect); |
| 93 | void SetAutomaticallyRetryOn5xx(bool retry); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 94 | void SetMaxRetriesOn5xx(int max_retries); |
| 95 | int GetMaxRetriesOn5xx() const; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 96 | base::TimeDelta GetBackoffDelay() const; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 97 | void SetAutomaticallyRetryOnNetworkChanges(int max_retries); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 98 | void SaveResponseToFileAtPath( |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 99 | const base::FilePath& file_path, |
Torne (Richard Coles) | f2477e0 | 2013-11-28 11:55:43 +0000 | [diff] [blame] | 100 | scoped_refptr<base::SequencedTaskRunner> file_task_runner); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 101 | void SaveResponseToTemporaryFile( |
Torne (Richard Coles) | f2477e0 | 2013-11-28 11:55:43 +0000 | [diff] [blame] | 102 | scoped_refptr<base::SequencedTaskRunner> file_task_runner); |
Torne (Richard Coles) | 4e180b6 | 2013-10-18 15:46:22 +0100 | [diff] [blame] | 103 | void SaveResponseWithWriter( |
| 104 | scoped_ptr<URLFetcherResponseWriter> response_writer); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 105 | HttpResponseHeaders* GetResponseHeaders() const; |
| 106 | HostPortPair GetSocketAddress() const; |
| 107 | bool WasFetchedViaProxy() const; |
| 108 | const GURL& GetOriginalURL() const; |
| 109 | const GURL& GetURL() const; |
| 110 | const URLRequestStatus& GetStatus() const; |
| 111 | int GetResponseCode() const; |
| 112 | const ResponseCookies& GetCookies() const; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 113 | // Reports that the received content was malformed (i.e. failed parsing |
| 114 | // or validation). This makes the throttling logic that does exponential |
| 115 | // back-off when servers are having problems treat the current request as |
| 116 | // a failure. Your call to this method will be ignored if your request is |
| 117 | // already considered a failure based on the HTTP response code or response |
| 118 | // headers. |
| 119 | void ReceivedContentWasMalformed(); |
| 120 | bool GetResponseAsString(std::string* out_response_string) const; |
| 121 | bool GetResponseAsFilePath(bool take_ownership, |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 122 | base::FilePath* out_response_path); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 123 | |
| 124 | // Overridden from URLRequest::Delegate: |
| 125 | virtual void OnReceivedRedirect(URLRequest* request, |
Torne (Richard Coles) | 6e8cce6 | 2014-08-19 13:00:08 +0100 | [diff] [blame] | 126 | const RedirectInfo& redirect_info, |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 127 | bool* defer_redirect) OVERRIDE; |
| 128 | virtual void OnResponseStarted(URLRequest* request) OVERRIDE; |
| 129 | virtual void OnReadCompleted(URLRequest* request, |
| 130 | int bytes_read) OVERRIDE; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 131 | virtual void OnCertificateRequested( |
| 132 | URLRequest* request, |
| 133 | SSLCertRequestInfo* cert_request_info) OVERRIDE; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 134 | |
| 135 | URLFetcherDelegate* delegate() const { return delegate_; } |
| 136 | static void CancelAll(); |
| 137 | static int GetNumFetcherCores(); |
| 138 | static void SetEnableInterceptionForTests(bool enabled); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 139 | static void SetIgnoreCertificateRequests(bool ignored); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 140 | |
| 141 | private: |
| 142 | friend class base::RefCountedThreadSafe<URLFetcherCore>; |
| 143 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 144 | class Registry { |
| 145 | public: |
| 146 | Registry(); |
| 147 | ~Registry(); |
| 148 | |
| 149 | void AddURLFetcherCore(URLFetcherCore* core); |
| 150 | void RemoveURLFetcherCore(URLFetcherCore* core); |
| 151 | |
| 152 | void CancelAll(); |
| 153 | |
| 154 | int size() const { |
| 155 | return fetchers_.size(); |
| 156 | } |
| 157 | |
| 158 | private: |
| 159 | std::set<URLFetcherCore*> fetchers_; |
| 160 | |
| 161 | DISALLOW_COPY_AND_ASSIGN(Registry); |
| 162 | }; |
| 163 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 164 | virtual ~URLFetcherCore(); |
| 165 | |
| 166 | // Wrapper functions that allow us to ensure actions happen on the right |
| 167 | // thread. |
| 168 | void StartOnIOThread(); |
| 169 | void StartURLRequest(); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 170 | void DidInitializeWriter(int result); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 171 | void StartURLRequestWhenAppropriate(); |
Torne (Richard Coles) | 4e180b6 | 2013-10-18 15:46:22 +0100 | [diff] [blame] | 172 | void CancelURLRequest(int error); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 173 | void OnCompletedURLRequest(base::TimeDelta backoff_delay); |
| 174 | void InformDelegateFetchIsComplete(); |
| 175 | void NotifyMalformedContent(); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 176 | void DidFinishWriting(int result); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 177 | void RetryOrCompleteUrlFetch(); |
| 178 | |
| 179 | // Deletes the request, removes it from the registry, and removes the |
| 180 | // destruction observer. |
| 181 | void ReleaseRequest(); |
| 182 | |
| 183 | // Returns the max value of exponential back-off release time for |
| 184 | // |original_url_| and |url_|. |
| 185 | base::TimeTicks GetBackoffReleaseTime(); |
| 186 | |
| 187 | void CompleteAddingUploadDataChunk(const std::string& data, |
| 188 | bool is_last_chunk); |
| 189 | |
Torne (Richard Coles) | 90dce4d | 2013-05-29 14:40:03 +0100 | [diff] [blame] | 190 | // Writes all bytes stored in |data| with |response_writer_|. |
| 191 | // Returns OK if all bytes in |data| get written synchronously. Otherwise, |
| 192 | // returns ERR_IO_PENDING or a network error code. |
| 193 | int WriteBuffer(scoped_refptr<DrainableIOBuffer> data); |
| 194 | |
| 195 | // Used to implement WriteBuffer(). |
| 196 | void DidWriteBuffer(scoped_refptr<DrainableIOBuffer> data, int result); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 197 | |
| 198 | // Read response bytes from the request. |
| 199 | void ReadResponse(); |
| 200 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 201 | // Notify Delegate about the progress of upload/download. |
| 202 | void InformDelegateUploadProgress(); |
| 203 | void InformDelegateUploadProgressInDelegateThread(int64 current, int64 total); |
| 204 | void InformDelegateDownloadProgress(); |
| 205 | void InformDelegateDownloadProgressInDelegateThread(int64 current, |
| 206 | int64 total); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 207 | |
| 208 | URLFetcher* fetcher_; // Corresponding fetcher object |
| 209 | GURL original_url_; // The URL we were asked to fetch |
| 210 | GURL url_; // The URL we eventually wound up at |
| 211 | URLFetcher::RequestType request_type_; // What type of request is this? |
| 212 | URLRequestStatus status_; // Status of the request |
| 213 | URLFetcherDelegate* delegate_; // Object to notify on completion |
Torne (Richard Coles) | 4e180b6 | 2013-10-18 15:46:22 +0100 | [diff] [blame] | 214 | // Task runner for the creating thread. Used to interact with the delegate. |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 215 | scoped_refptr<base::SingleThreadTaskRunner> delegate_task_runner_; |
Torne (Richard Coles) | 4e180b6 | 2013-10-18 15:46:22 +0100 | [diff] [blame] | 216 | // Task runner for network operations. |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 217 | scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_; |
Torne (Richard Coles) | 4e180b6 | 2013-10-18 15:46:22 +0100 | [diff] [blame] | 218 | // Task runner for upload file access. |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 219 | scoped_refptr<base::TaskRunner> upload_file_task_runner_; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 220 | scoped_ptr<URLRequest> request_; // The actual request this wraps |
| 221 | int load_flags_; // Flags for the load operation |
| 222 | int response_code_; // HTTP status code for the request |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 223 | scoped_refptr<IOBuffer> buffer_; |
| 224 | // Read buffer |
| 225 | scoped_refptr<URLRequestContextGetter> request_context_getter_; |
| 226 | // Cookie/cache info for the request |
| 227 | GURL first_party_for_cookies_; // The first party URL for the request |
| 228 | // The user data to add to each newly-created URLRequest. |
| 229 | const void* url_request_data_key_; |
| 230 | URLFetcher::CreateDataCallback url_request_create_data_callback_; |
| 231 | ResponseCookies cookies_; // Response cookies |
| 232 | HttpRequestHeaders extra_request_headers_; |
| 233 | scoped_refptr<HttpResponseHeaders> response_headers_; |
| 234 | bool was_fetched_via_proxy_; |
| 235 | HostPortPair socket_address_; |
| 236 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 237 | bool upload_content_set_; // SetUploadData has been called |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 238 | std::string upload_content_; // HTTP POST payload |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 239 | base::FilePath upload_file_path_; // Path to file containing POST payload |
Torne (Richard Coles) | c2e0dbd | 2013-05-09 18:35:53 +0100 | [diff] [blame] | 240 | uint64 upload_range_offset_; // Offset from the beginning of the file |
| 241 | // to be uploaded. |
| 242 | uint64 upload_range_length_; // The length of the part of file to be |
| 243 | // uploaded. |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 244 | std::string upload_content_type_; // MIME type of POST payload |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 245 | std::string referrer_; // HTTP Referer header value and policy |
| 246 | URLRequest::ReferrerPolicy referrer_policy_; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 247 | bool is_chunked_upload_; // True if using chunked transfer encoding |
| 248 | |
| 249 | // Used to determine how long to wait before making a request or doing a |
| 250 | // retry. |
| 251 | // |
| 252 | // Both of them can only be accessed on the IO thread. |
| 253 | // |
| 254 | // We need not only the throttler entry for |original_URL|, but also |
| 255 | // the one for |url|. For example, consider the case that URL A |
| 256 | // redirects to URL B, for which the server returns a 500 |
| 257 | // response. In this case, the exponential back-off release time of |
| 258 | // URL A won't increase. If we retry without considering the |
| 259 | // back-off constraint of URL B, we may send out too many requests |
| 260 | // for URL A in a short period of time. |
| 261 | // |
| 262 | // Both of these will be NULL if |
| 263 | // URLRequestContext::throttler_manager() is NULL. |
| 264 | scoped_refptr<URLRequestThrottlerEntryInterface> |
| 265 | original_url_throttler_entry_; |
| 266 | scoped_refptr<URLRequestThrottlerEntryInterface> url_throttler_entry_; |
| 267 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 268 | // True if the URLFetcher has been cancelled. |
| 269 | bool was_cancelled_; |
| 270 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 271 | // Writer object to write response to the destination like file and string. |
| 272 | scoped_ptr<URLFetcherResponseWriter> response_writer_; |
| 273 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 274 | // By default any server-initiated redirects are automatically followed. If |
| 275 | // this flag is set to true, however, a redirect will halt the fetch and call |
| 276 | // back to to the delegate immediately. |
| 277 | bool stop_on_redirect_; |
| 278 | // True when we're actually stopped due to a redirect halted by the above. We |
| 279 | // use this to ensure that |url_| is set to the redirect destination rather |
| 280 | // than the originally-fetched URL. |
| 281 | bool stopped_on_redirect_; |
| 282 | |
| 283 | // If |automatically_retry_on_5xx_| is false, 5xx responses will be |
| 284 | // propagated to the observer, if it is true URLFetcher will automatically |
| 285 | // re-execute the request, after the back-off delay has expired. |
| 286 | // true by default. |
| 287 | bool automatically_retry_on_5xx_; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 288 | // |num_retries_on_5xx_| indicates how many times we've failed to successfully |
| 289 | // fetch this URL due to 5xx responses. Once this value exceeds the maximum |
| 290 | // number of retries specified by the owner URLFetcher instance, |
| 291 | // we'll give up. |
| 292 | int num_retries_on_5xx_; |
| 293 | // Maximum retries allowed when 5xx responses are received. |
| 294 | int max_retries_on_5xx_; |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 295 | // Back-off time delay. 0 by default. |
| 296 | base::TimeDelta backoff_delay_; |
| 297 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 298 | // The number of retries that have been attempted due to ERR_NETWORK_CHANGED. |
| 299 | int num_retries_on_network_changes_; |
| 300 | // Maximum retries allowed when the request fails with ERR_NETWORK_CHANGED. |
| 301 | // 0 by default. |
| 302 | int max_retries_on_network_changes_; |
| 303 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 304 | // Timer to poll the progress of uploading for POST and PUT requests. |
| 305 | // When crbug.com/119629 is fixed, scoped_ptr is not necessary here. |
| 306 | scoped_ptr<base::RepeatingTimer<URLFetcherCore> > |
| 307 | upload_progress_checker_timer_; |
| 308 | // Number of bytes sent so far. |
| 309 | int64 current_upload_bytes_; |
| 310 | // Number of bytes received so far. |
| 311 | int64 current_response_bytes_; |
| 312 | // Total expected bytes to receive (-1 if it cannot be determined). |
| 313 | int64 total_response_bytes_; |
| 314 | |
| 315 | // TODO(willchan): Get rid of this after debugging crbug.com/90971. |
| 316 | base::debug::StackTrace stack_trace_; |
| 317 | |
| 318 | static base::LazyInstance<Registry> g_registry; |
| 319 | |
| 320 | DISALLOW_COPY_AND_ASSIGN(URLFetcherCore); |
| 321 | }; |
| 322 | |
| 323 | } // namespace net |
| 324 | |
| 325 | #endif // NET_URL_REQUEST_URL_FETCHER_CORE_H_ |