bluetooth: Return int8_t and use -128 for unknown tx power.

content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.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 "content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 322 matching lines @@
   adapter->AddMockDevice(std::move(device));
 
   return adapter;
 }
 
 // static
 scoped_refptr<NiceMockBluetoothAdapter>
 LayoutTestBluetoothAdapterProvider::GetPowerPresenceAdapter(
     bool tx_power_present,
     bool rssi_present) {
-  // TODO(ortuno): RSSI Unknown and Tx Power Unknown should have different
-  // values. Add kUnknownTxPower when implemented: http://crbug.com/551572
   int tx_power =
-      tx_power_present ? kDefaultTxPower : BluetoothDevice::kUnknownPower;
-  int rssi = rssi_present ? kDefaultRssi : BluetoothDevice::kUnknownPower;
+      tx_power_present ? kDefaultTxPower : BluetoothDevice::kUnknownTxPower;
+  int rssi = rssi_present ? kDefaultRssi : BluetoothDevice::kUnknownRSSI;
 
   return GetPowerValueAdapter(tx_power, rssi);
 }
 
 // static
 scoped_refptr<NiceMockBluetoothAdapter>
 LayoutTestBluetoothAdapterProvider::GetGlucoseHeartRateAdapter() {
   scoped_refptr<NiceMockBluetoothAdapter> adapter(GetEmptyAdapter());
 
   adapter->AddMockDevice(GetHeartRateDevice(adapter.get()));
@@ skipping 672 matching lines @@
   return BluetoothUUID();
 }
 
 // static
 std::string LayoutTestBluetoothAdapterProvider::makeMACAddress(uint64_t addr) {
   return BluetoothDevice::CanonicalizeAddress(
       base::StringPrintf("%012" PRIx64, addr));
 }
 
 }  // namespace content