Geolocation: move polling policy to its own file.

content/browser/geolocation/wifi_polling_policy.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 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.
 
-#ifndef CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_
-#define CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_
-
-#include <assert.h>
-
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string16.h"
-#include "content/browser/geolocation/wifi_data_provider.h"
-#include "content/common/content_export.h"
+#ifndef CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_
+#define CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_
 
 namespace content {
 
-// Converts a MAC address stored as an array of uint8 to a string.
-string16 MacAddressAsString16(const uint8 mac_as_int[6]);
-
 // Allows sharing and mocking of the update polling policy function.
-class PollingPolicyInterface {
+class WifiPollingPolicy {
  public:
-  virtual ~PollingPolicyInterface() {}
+  WifiPollingPolicy() {}
+  virtual ~WifiPollingPolicy() {}
   // Calculates the new polling interval for wiFi scans, given the previous
   // interval and whether the last scan produced new results.
   virtual void UpdatePollingInterval(bool scan_results_differ) = 0;
   virtual int PollingInterval() = 0;
   virtual int NoWifiInterval() = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WifiPollingPolicy);
 };
 
 // Generic polling policy, constants are compile-time parameterized to allow
 // tuning on a per-platform basis.
 template<int DEFAULT_INTERVAL,
          int NO_CHANGE_INTERVAL,
          int TWO_NO_CHANGE_INTERVAL,
          int NO_WIFI_INTERVAL>
-class GenericPollingPolicy : public PollingPolicyInterface {
+class GenericWifiPollingPolicy : public WifiPollingPolicy {
  public:
-  GenericPollingPolicy() : polling_interval_(DEFAULT_INTERVAL) {}
-  // PollingPolicyInterface
+  GenericWifiPollingPolicy() : polling_interval_(DEFAULT_INTERVAL) {}
+  // WifiPollingPolicy
   virtual void UpdatePollingInterval(bool scan_results_differ) {
     if (scan_results_differ) {
       polling_interval_ = DEFAULT_INTERVAL;
     } else if (polling_interval_ == DEFAULT_INTERVAL) {
       polling_interval_ = NO_CHANGE_INTERVAL;
     } else {
       DCHECK(polling_interval_ == NO_CHANGE_INTERVAL ||
              polling_interval_ == TWO_NO_CHANGE_INTERVAL);
       polling_interval_ = TWO_NO_CHANGE_INTERVAL;
     }
   }
   virtual int PollingInterval() { return polling_interval_; }
   virtual int NoWifiInterval() { return NO_WIFI_INTERVAL; }
 
  private:
   int polling_interval_;
 };
 
-// Base class to promote code sharing between platform specific wifi data
-// providers. It's optional for specific platforms to derive this, but if they
-// do polling behavior is taken care of by this base class, and all the platform
-// need do is provide the underlying WLAN access API and polling policy.
-// Also designed this way for ease of testing the cross-platform behavior.
-class CONTENT_EXPORT WifiDataProviderCommon : public WifiDataProviderImplBase {
- public:
-  // Interface to abstract the low level data OS library call, and to allow
-  // mocking (hence public).
-  class WlanApiInterface {
-   public:
-    virtual ~WlanApiInterface() {}
-    // Gets wifi data for all visible access points.
-    virtual bool GetAccessPointData(WifiData::AccessPointDataSet* data) = 0;
-  };
-
-  WifiDataProviderCommon();
-
-  // WifiDataProviderImplBase implementation
-  virtual void StartDataProvider() OVERRIDE;
-  virtual void StopDataProvider() OVERRIDE;
-  virtual bool GetData(WifiData* data) OVERRIDE;
-
- protected:
-  virtual ~WifiDataProviderCommon();
-
-  // Returns ownership.
-  virtual WlanApiInterface* NewWlanApi() = 0;
-
-  // Returns ownership.
-  virtual PollingPolicyInterface* NewPollingPolicy() = 0;
-
- private:
-  // Runs a scan. Calls the callbacks if new data is found.
-  void DoWifiScanTask();
-
-  // Will schedule a scan; i.e. enqueue DoWifiScanTask deferred task.
-  void ScheduleNextScan(int interval);
-
-  WifiData wifi_data_;
-
-  // Whether we've successfully completed a scan for WiFi data.
-  bool is_first_scan_complete_;
-
-  // Underlying OS wifi API.
-  scoped_ptr<WlanApiInterface> wlan_api_;
-
-  // Controls the polling update interval.
-  scoped_ptr<PollingPolicyInterface> polling_policy_;
-
-  // Holder for delayed tasks; takes care of cleanup.
-  base::WeakPtrFactory<WifiDataProviderCommon> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(WifiDataProviderCommon);
-};
-
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_
+#endif  // CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_