(Fix landed) Revert of [CrOS Tether] Create HostScanCache, which caches scan results and inserts...

chromeos/components/tether/fake_host_scan_cache.h

-// Copyright 2017 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_FAKE_HOST_SCAN_CACHE_H_
-#define CHROMEOS_COMPONENTS_TETHER_FAKE_HOST_SCAN_CACHE_H_
-
-#include <string>
-#include <unordered_map>
-
-#include "base/macros.h"
-#include "chromeos/components/tether/host_scan_cache.h"
-
-namespace chromeos {
-
-namespace tether {
-
-// Test double for HostScanCache which stores cache results in memory.
-class FakeHostScanCache : public HostScanCache {
- public:
-  struct CacheEntry {
-    std::string device_name;
-    std::string carrier;
-    int battery_percentage;
-    int signal_strength;
-  };
-
-  FakeHostScanCache();
-  ~FakeHostScanCache() override;
-
-  // Getter and setter for the active host Tether network GUID. This value is
-  // used to implement the ClearCacheExceptForActiveHost() function.
-  std::string& active_host_tether_network_guid() {
-    return active_host_tether_network_guid_;
-  }
-  void set_active_host_tether_network_guid(
-      const std::string& active_host_tether_network_guid) {
-    active_host_tether_network_guid_ = active_host_tether_network_guid;
-  }
-
-  // Getters for contents of the cache.
-  const FakeHostScanCache::CacheEntry* GetCacheEntry(
-      const std::string& tether_network_guid);
-  size_t size() { return cache_.size(); }
-  bool empty() { return cache_.empty(); }
-  const std::unordered_map<std::string, FakeHostScanCache::CacheEntry> cache() {
-    return cache_;
-  }
-
-  // HostScanCache:
-  void SetHostScanResult(const std::string& tether_network_guid,
-                         const std::string& device_name,
-                         const std::string& carrier,
-                         int battery_percentage,
-                         int signal_strength) override;
-  bool RemoveHostScanResult(const std::string& tether_network_guid) override;
-  void ClearCacheExceptForActiveHost() override;
-  void OnPreviouslyConnectedHostIdsChanged() override;
-
- private:
-  std::string active_host_tether_network_guid_;
-  std::unordered_map<std::string, CacheEntry> cache_;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeHostScanCache);
-};
-
-}  // namespace tether
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_COMPONENTS_TETHER_FAKE_HOST_SCAN_CACHE_H_