Expose device RSSI and Tx power via the chrome.bluetooth API.

chrome/browser/extensions/api/bluetooth/bluetooth_private_api.cc

 // Copyright 2014 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 "chrome/browser/extensions/api/bluetooth/bluetooth_private_api.h"
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/extensions/api/bluetooth/bluetooth_api.h"
@@ skipping 258 matching lines @@
         break;
       default:
         NOTREACHED();
     }
   }
 
   SendResponse(true);
   return true;
 }
 
+BluetoothPrivateGetDeviceRSSIFunction::
+    BluetoothPrivateGetDeviceRSSIFunction() {}
+
+BluetoothPrivateGetDeviceRSSIFunction::
+    ~BluetoothPrivateGetDeviceRSSIFunction() {}
+
+bool BluetoothPrivateGetDeviceRSSIFunction::DoWork(
+    scoped_refptr<device::BluetoothAdapter> adapter) {
+  scoped_ptr<bt_private::GetDeviceRSSI::Params> params(
+      bt_private::GetDeviceRSSI::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+  const std::string& device_address = params->address;
+  device::BluetoothDevice* device = adapter->GetDevice(device_address);
+  if (!device) {
+    SetError(kDeviceNotFoundError);
+    SendResponse(false);
+    return false;
+  }
+
+  results_ = bt_private::GetDeviceRSSI::Results::Create(device->GetRSSI());
+  SendResponse(true);
+  return true;
+}
+
 }  // namespace api
 
 }  // namespace extensions