Remove //net (except for Android test stuff) and sdch

net/proxy/dhcp_proxy_script_fetcher_win.h

-// Copyright (c) 2012 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 NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
-#define NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
-
-#include <set>
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_vector.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/time.h"
-#include "base/timer/timer.h"
-#include "net/proxy/dhcp_proxy_script_fetcher.h"
-
-namespace base {
-class SequencedWorkerPool;
-}
-
-namespace net {
-
-class DhcpProxyScriptAdapterFetcher;
-class URLRequestContext;
-
-// Windows-specific implementation.
-class NET_EXPORT_PRIVATE DhcpProxyScriptFetcherWin
-    : public DhcpProxyScriptFetcher,
-      public base::SupportsWeakPtr<DhcpProxyScriptFetcherWin>,
-      NON_EXPORTED_BASE(public base::NonThreadSafe) {
- public:
-  // Creates a DhcpProxyScriptFetcherWin that issues requests through
-  // |url_request_context|. |url_request_context| must remain valid for
-  // the lifetime of DhcpProxyScriptFetcherWin.
-  explicit DhcpProxyScriptFetcherWin(URLRequestContext* url_request_context);
-  virtual ~DhcpProxyScriptFetcherWin();
-
-  // DhcpProxyScriptFetcher implementation.
-  int Fetch(base::string16* utf16_text,
-            const net::CompletionCallback& callback) override;
-  void Cancel() override;
-  const GURL& GetPacURL() const override;
-  std::string GetFetcherName() const override;
-
-  // Sets |adapter_names| to contain the name of each network adapter on
-  // this machine that has DHCP enabled and is not a loop-back adapter. Returns
-  // false on error.
-  static bool GetCandidateAdapterNames(std::set<std::string>* adapter_names);
-
- protected:
-  int num_pending_fetchers() const;
-
-  URLRequestContext* url_request_context() const;
-
-  scoped_refptr<base::TaskRunner> GetTaskRunner();
-
-  // This inner class encapsulate work done on a worker pool thread.
-  // The class calls GetCandidateAdapterNames, which can take a couple of
-  // hundred milliseconds.
-  class NET_EXPORT_PRIVATE AdapterQuery
-      : public base::RefCountedThreadSafe<AdapterQuery> {
-   public:
-    AdapterQuery();
-    virtual ~AdapterQuery();
-
-    // This is the method that runs on the worker pool thread.
-    void GetCandidateAdapterNames();
-
-    // This set is valid after GetCandidateAdapterNames has
-    // been run. Its lifetime is scoped by this object.
-    const std::set<std::string>& adapter_names() const;
-
-   protected:
-    // Virtual method introduced to allow unit testing.
-    virtual bool ImplGetCandidateAdapterNames(
-        std::set<std::string>* adapter_names);
-
-   private:
-    // This is constructed on the originating thread, then used on the
-    // worker thread, then used again on the originating thread only when
-    // the task has completed on the worker thread. No locking required.
-    std::set<std::string> adapter_names_;
-
-    DISALLOW_COPY_AND_ASSIGN(AdapterQuery);
-  };
-
-  // Virtual methods introduced to allow unit testing.
-  virtual DhcpProxyScriptAdapterFetcher* ImplCreateAdapterFetcher();
-  virtual AdapterQuery* ImplCreateAdapterQuery();
-  virtual base::TimeDelta ImplGetMaxWait();
-  virtual void ImplOnGetCandidateAdapterNamesDone() {}
-
- private:
-  // Event/state transition handlers
-  void CancelImpl();
-  void OnGetCandidateAdapterNamesDone(scoped_refptr<AdapterQuery> query);
-  void OnFetcherDone(int result);
-  void OnWaitTimer();
-  void TransitionToDone();
-
-  // This is the outer state machine for fetching PAC configuration from
-  // DHCP.  It relies for sub-states on the state machine of the
-  // DhcpProxyScriptAdapterFetcher class.
-  //
-  // The goal of the implementation is to the following work in parallel
-  // for all network adapters that are using DHCP:
-  // a) Try to get the PAC URL configured in DHCP;
-  // b) If one is configured, try to fetch the PAC URL.
-  // c) Once this is done for all adapters, or a timeout has passed after
-  //    it has completed for the fastest adapter, return the PAC file
-  //    available for the most preferred network adapter, if any.
-  //
-  // The state machine goes from START->WAIT_ADAPTERS when it starts a
-  // worker thread to get the list of adapters with DHCP enabled.
-  // It then goes from WAIT_ADAPTERS->NO_RESULTS when it creates
-  // and starts an DhcpProxyScriptAdapterFetcher for each adapter.  It goes
-  // from NO_RESULTS->SOME_RESULTS when it gets the first result; at this
-  // point a wait timer is started.  It goes from SOME_RESULTS->DONE in
-  // two cases: All results are known, or the wait timer expired.  A call
-  // to Cancel() will also go straight to DONE from any state.  Any
-  // way the DONE state is entered, we will at that point cancel any
-  // outstanding work and return the best known PAC script or the empty
-  // string.
-  //
-  // The state machine is reset for each Fetch(), a call to which is
-  // only valid in states START and DONE, as only one Fetch() is
-  // allowed to be outstanding at any given time.
-  enum State {
-    STATE_START,
-    STATE_WAIT_ADAPTERS,
-    STATE_NO_RESULTS,
-    STATE_SOME_RESULTS,
-    STATE_DONE,
-  };
-
-  // Current state of this state machine.
-  State state_;
-
-  // Vector, in Windows' network adapter preference order, of
-  // DhcpProxyScriptAdapterFetcher objects that are or were attempting
-  // to fetch a PAC file based on DHCP configuration.
-  typedef ScopedVector<DhcpProxyScriptAdapterFetcher> FetcherVector;
-  FetcherVector fetchers_;
-
-  // Number of fetchers we are waiting for.
-  int num_pending_fetchers_;
-
-  // Lets our client know we're done. Not valid in states START or DONE.
-  net::CompletionCallback callback_;
-
-  // Pointer to string we will write results to. Not valid in states
-  // START and DONE.
-  base::string16* destination_string_;
-
-  // PAC URL retrieved from DHCP, if any. Valid only in state STATE_DONE.
-  GURL pac_url_;
-
-  base::OneShotTimer<DhcpProxyScriptFetcherWin> wait_timer_;
-
-  URLRequestContext* const url_request_context_;
-
-  // NULL or the AdapterQuery currently in flight.
-  scoped_refptr<AdapterQuery> last_query_;
-
-  // Time |Fetch()| was last called, 0 if never.
-  base::TimeTicks fetch_start_time_;
-
-  // Worker pool we use for all DHCP lookup tasks.
-  scoped_refptr<base::SequencedWorkerPool> worker_pool_;
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(DhcpProxyScriptFetcherWin);
-};
-
-}  // namespace net
-
-#endif  // NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_