[DeviceService] Move PowerMonitor interfaces, client lib, impl to live in Device Service

services/device/power_monitor/power_monitor_message_broadcaster_unittest.cc

 // Copyright 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.
 
+#include "services/device/power_monitor/power_monitor_message_broadcaster.h"
+
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/power_monitor_test_base.h"
-#include "device/power_monitor/power_monitor_message_broadcaster.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace device {
 
 class FakePowerMonitorClient : public device::mojom::PowerMonitorClient {
  public:
   FakePowerMonitorClient(device::mojom::PowerMonitorClientRequest request)
       : binding_(this, std::move(request)),
         power_state_changes_(0),
@@ skipping 82 matching lines @@
   // Pretend the device has gone off battery power
   source()->GeneratePowerStateEvent(false);
   EXPECT_EQ(client.power_state_changes(), 3);
 
   // Repeated indications the device is off battery power should be suppressed.
   source()->GeneratePowerStateEvent(false);
   EXPECT_EQ(client.power_state_changes(), 3);
 }
 
 }  // namespace device