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

net/proxy/dhcp_proxy_script_adapter_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_ADAPTER_FETCHER_WIN_H_
-#define NET_PROXY_DHCP_PROXY_SCRIPT_ADAPTER_FETCHER_WIN_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string16.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/timer/timer.h"
-#include "net/base/completion_callback.h"
-#include "net/base/net_export.h"
-#include "url/gurl.h"
-
-namespace base {
-class TaskRunner;
-}
-
-namespace net {
-
-class ProxyScriptFetcher;
-class URLRequestContext;
-
-// For a given adapter, this class takes care of first doing a DHCP lookup
-// to get the PAC URL, then if there is one, trying to fetch it.
-class NET_EXPORT_PRIVATE DhcpProxyScriptAdapterFetcher
-    : public base::SupportsWeakPtr<DhcpProxyScriptAdapterFetcher>,
-      NON_EXPORTED_BASE(public base::NonThreadSafe) {
- public:
-  // |url_request_context| must outlive DhcpProxyScriptAdapterFetcher.
-  // |task_runner| will be used to post tasks to a thread.
-  DhcpProxyScriptAdapterFetcher(URLRequestContext* url_request_context,
-                                scoped_refptr<base::TaskRunner> task_runner);
-  virtual ~DhcpProxyScriptAdapterFetcher();
-
-  // Starts a fetch.  On completion (but not cancellation), |callback|
-  // will be invoked with the network error indicating success or failure
-  // of fetching a DHCP-configured PAC file on this adapter.
-  //
-  // On completion, results can be obtained via |GetPacScript()|, |GetPacURL()|.
-  //
-  // You may only call Fetch() once on a given instance of
-  // DhcpProxyScriptAdapterFetcher.
-  virtual void Fetch(const std::string& adapter_name,
-                     const net::CompletionCallback& callback);
-
-  // Cancels the fetch on this adapter.
-  virtual void Cancel();
-
-  // Returns true if in the FINISH state (not CANCEL).
-  virtual bool DidFinish() const;
-
-  // Returns the network error indicating the result of the fetch. Will
-  // return IO_PENDING until the fetch is complete or cancelled. This is
-  // the same network error passed to the |callback| provided to |Fetch()|.
-  virtual int GetResult() const;
-
-  // Returns the contents of the PAC file retrieved.  Only valid if
-  // |IsComplete()| is true.  Returns the empty string if |GetResult()|
-  // returns anything other than OK.
-  virtual base::string16 GetPacScript() const;
-
-  // Returns the PAC URL retrieved from DHCP.  Only guaranteed to be
-  // valid if |IsComplete()| is true.  Returns an empty URL if no URL was
-  // configured in DHCP.  May return a valid URL even if |result()| does
-  // not return OK (this would indicate that we found a URL configured in
-  // DHCP but failed to download it).
-  virtual GURL GetPacURL() const;
-
-  // Returns the PAC URL configured in DHCP for the given |adapter_name|, or
-  // the empty string if none is configured.
-  //
-  // This function executes synchronously due to limitations of the Windows
-  // DHCP client API.
-  static std::string GetPacURLFromDhcp(const std::string& adapter_name);
-
-  // Sanitizes a string returned via the DHCP API.
-  static std::string SanitizeDhcpApiString(const char* data,
-                                           size_t count_bytes);
-
- protected:
-  // This is the state machine for fetching from a given adapter.
-  //
-  // The state machine goes from START->WAIT_DHCP when it starts
-  // a worker thread to fetch the PAC URL from DHCP.
-  //
-  // In state WAIT_DHCP, if the DHCP query finishes and has no URL, it
-  // moves to state FINISH.  If there is a URL, it starts a
-  // ProxyScriptFetcher to fetch it and moves to state WAIT_URL.
-  //
-  // It goes from WAIT_URL->FINISH when the ProxyScriptFetcher completes.
-  //
-  // In state FINISH, completion is indicated to the outer class, with
-  // the results of the fetch if a PAC script was successfully fetched.
-  //
-  // In state WAIT_DHCP, our timeout occurring can push us to FINISH.
-  //
-  // In any state except FINISH, a call to Cancel() will move to state
-  // CANCEL and cause all outstanding work to be cancelled or its
-  // results ignored when available.
-  enum State {
-    STATE_START,
-    STATE_WAIT_DHCP,
-    STATE_WAIT_URL,
-    STATE_FINISH,
-    STATE_CANCEL,
-  };
-
-  State state() const;
-
-  // This inner class encapsulates work done on a worker pool thread.
-  // By using a separate object, we can keep the main object completely
-  // thread safe and let it be non-refcounted.
-  class NET_EXPORT_PRIVATE DhcpQuery
-      : public base::RefCountedThreadSafe<DhcpQuery> {
-   public:
-    DhcpQuery();
-    virtual ~DhcpQuery();
-
-    // This method should run on a worker pool thread, via PostTaskAndReply.
-    // After it has run, the |url()| method on this object will return the
-    // URL retrieved.
-    void GetPacURLForAdapter(const std::string& adapter_name);
-
-    // Returns the URL retrieved for the given adapter, once the task has run.
-    const std::string& url() const;
-
-   protected:
-    // Virtual method introduced to allow unit testing.
-    virtual std::string ImplGetPacURLFromDhcp(const std::string& adapter_name);
-
-   private:
-    // The URL retrieved for the given adapter.
-    std::string url_;
-
-    DISALLOW_COPY_AND_ASSIGN(DhcpQuery);
-  };
-
-  // Virtual methods introduced to allow unit testing.
-  virtual ProxyScriptFetcher* ImplCreateScriptFetcher();
-  virtual DhcpQuery* ImplCreateDhcpQuery();
-  virtual base::TimeDelta ImplGetTimeout() const;
-
- private:
-  // Event/state transition handlers
-  void OnDhcpQueryDone(scoped_refptr<DhcpQuery> dhcp_query);
-  void OnTimeout();
-  void OnFetcherDone(int result);
-  void TransitionToFinish();
-
-  // TaskRunner for posting tasks to a worker thread.
-  scoped_refptr<base::TaskRunner> task_runner_;
-
-  // Current state of this state machine.
-  State state_;
-
-  // A network error indicating result of operation.
-  int result_;
-
-  // Empty string or the PAC script downloaded.
-  base::string16 pac_script_;
-
-  // Empty URL or the PAC URL configured in DHCP.
-  GURL pac_url_;
-
-  // Callback to let our client know we're done. Invalid in states
-  // START, FINISH and CANCEL.
-  net::CompletionCallback callback_;
-
-  // Fetcher to retrieve PAC files once URL is known.
-  scoped_ptr<ProxyScriptFetcher> script_fetcher_;
-
-  // Implements a timeout on the call to the Win32 DHCP API.
-  base::OneShotTimer<DhcpProxyScriptAdapterFetcher> wait_timer_;
-
-  URLRequestContext* const url_request_context_;
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(DhcpProxyScriptAdapterFetcher);
-};
-
-}  // namespace net
-
-#endif  // NET_PROXY_DHCP_PROXY_SCRIPT_ADAPTER_FETCHER_WIN_H_