Revert 76228 - Move core pieces of geolocation from chrome to content.This is...

content/browser/geolocation/gateway_data_provider_common.h

-// Copyright (c) 2010 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 CHROME_BROWSER_GEOLOCATION_GATEWAY_DATA_PROVIDER_COMMON_H_
-#define CHROME_BROWSER_GEOLOCATION_GATEWAY_DATA_PROVIDER_COMMON_H_
-#pragma once
-
-#include "base/logging.h"
-#include "base/scoped_ptr.h"
-#include "base/string16.h"
-#include "base/task.h"
-#include "base/threading/thread.h"
-#include "content/browser/geolocation/device_data_provider.h"
-
-namespace {
-const int kDefaultInterval = 20 * 60 * 1000; // 20 mins
-const int kNoRouterInterval = 30 * 1000; // 30s
-}
-
-// Allows sharing and mocking of the update polling policy function.
-class GatewayPollingPolicyInterface {
- public:
-  virtual ~GatewayPollingPolicyInterface() {}
-
-  // Returns the polling interval to be used when we are connected to a router
-  // via Ethernet.
-  virtual int PollingInterval() = 0;
-  // Returns the polling interval to be used when there are no adapters
-  // connected to a router via Ethernet.
-  virtual int NoRouterInterval() = 0;
-};
-
-// Base class to promote sharing between platform specific gateway data
-// providers.
-// TODO(allanwoj): This class and WifiDataProviderCommon are extremely similar
-// so we might as well derive all data providers from a single base class
-// generalised for different network data types.
-class GatewayDataProviderCommon
-    : public GatewayDataProviderImplBase,
-      private base::Thread {
- public:
-  // Interface to abstract the low level data OS library call, and to allow
-  // mocking (hence public).
-  class GatewayApiInterface {
-   public:
-    virtual ~GatewayApiInterface() {}
-    // Gets wifi data for all visible access points.
-    virtual bool GetRouterData(GatewayData::RouterDataSet* data) = 0;
-  };
-
-  GatewayDataProviderCommon();
-
-  // GatewayDataProviderImplBase implementation.
-  virtual bool StartDataProvider();
-  virtual void StopDataProvider();
-  virtual bool GetData(GatewayData *data);
-
- protected:
-  virtual ~GatewayDataProviderCommon();
-
-  // Returns ownership. Will be called from the worker thread.
-  virtual GatewayApiInterface* NewGatewayApi() = 0;
-  // Returns ownership. Will be called from the worker thread.
-  virtual GatewayPollingPolicyInterface* NewPollingPolicy();
-
- private:
-  class GenericGatewayPollingPolicy : public GatewayPollingPolicyInterface {
-   public:
-    GenericGatewayPollingPolicy() {}
-
-    // GatewayPollingPolicyInterface
-    virtual int PollingInterval() { return kDefaultInterval; }
-    virtual int NoRouterInterval() { return kNoRouterInterval; }
-  };
-
-  // Thread implementation.
-  virtual void Init();
-  virtual void CleanUp();
-
-  // Task which run in the child thread.
-  void DoRouterScanTask();
-  // Will schedule a scan; i.e. enqueue DoRouterScanTask deferred task.
-  void ScheduleNextScan(int interval);
-
-  base::Lock data_mutex_;
-  // Whether we've successfully completed a scan for gateway data (or the
-  // polling thread has terminated early).
-  bool is_first_scan_complete_;
-  // Underlying OS gateway API.
-  scoped_ptr<GatewayApiInterface> gateway_api_;
-  GatewayData gateway_data_;
-  // Controls the polling update interval.
-  scoped_ptr<GatewayPollingPolicyInterface> polling_policy_;
-  // Holder for the tasks which run on the thread; takes care of cleanup.
-  ScopedRunnableMethodFactory<GatewayDataProviderCommon> task_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(GatewayDataProviderCommon);
-};
-
-#endif  // CHROME_BROWSER_GEOLOCATION_GATEWAY_DATA_PROVIDER_COMMON_H_