Hook up ProximityAuthSystem in EasyUnlockService.

components/proximity_auth/unlock_manager_unittest.cc

 // Copyright 2015 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.
 
 #include "components/proximity_auth/unlock_manager.h"
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/test/test_simple_task_runner.h"
@@ skipping 71 matching lines @@
     ON_CALL(*this, IsInRssiRange()).WillByDefault(Return(false));
   }
   ~MockProximityMonitor() override {}
 
   MOCK_METHOD0(Start, void());
   MOCK_METHOD0(Stop, void());
   MOCK_CONST_METHOD0(GetStrategy, Strategy());
   MOCK_CONST_METHOD0(IsUnlockAllowed, bool());
   MOCK_CONST_METHOD0(IsInRssiRange, bool());
   MOCK_METHOD0(RecordProximityMetricsOnAuthSuccess, void());
+  MOCK_METHOD1(AddObserver, void(ProximityMonitorObserver*));
+  MOCK_METHOD1(RemoveObserver, void(ProximityMonitorObserver*));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockProximityMonitor);
 };
 
 class FakeLockHandler : public ScreenlockBridge::LockHandler {
  public:
   FakeLockHandler() {}
   ~FakeLockHandler() override {}
 
@@ skipping 717 matching lines @@
   SimulateUserPresentState();
 
   EXPECT_CALL(messenger_, DispatchUnlockEvent());
   unlock_manager_->OnAuthAttempted(ScreenlockBridge::LockHandler::USER_CLICK);
 
   EXPECT_CALL(proximity_auth_client_, FinalizeUnlock(true));
   unlock_manager_->OnUnlockEventSent(true);
 }
 
 }  // namespace proximity_auth