[CrOS Tether] Create BleScanner, a class which scan BLE advertisements and identifies nearby device…

chromeos/components/tether/local_device_data_provider.h

 // Copyright 2016 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 CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H
 #define CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 18 matching lines @@
  public:
   LocalDeviceDataProvider(
       const cryptauth::CryptAuthDeviceManager* cryptauth_device_manager,
       const cryptauth::CryptAuthEnrollmentManager*
           cryptauth_enrollment_manager);
   virtual ~LocalDeviceDataProvider();
 
   // Fetches the public key and/or the beacon seeds for the local device.
   // Returns whether the operation succeeded. If |nullptr| is passed as a
   // parameter, the associated data will not be fetched.
-  bool GetLocalDeviceData(
+  virtual bool GetLocalDeviceData(
       std::string* public_key_out,
       std::vector<cryptauth::BeaconSeed>* beacon_seeds_out) const;
 
  private:
   friend class LocalDeviceDataProviderTest;
 
   class LocalDeviceDataProviderDelegate {
    public:
     virtual ~LocalDeviceDataProviderDelegate() {}
     virtual std::string GetUserPublicKey() const = 0;
@@ skipping 29 matching lines @@
   std::unique_ptr<LocalDeviceDataProviderDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalDeviceDataProvider);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H