bluetooth: Add histograms and logging for getPrimaryService()

content/browser/bluetooth/bluetooth_dispatcher_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/browser_message_filter.h"
@@ skipping 101 matching lines @@
       const std::string& device_instance_id,
       base::TimeTicks start_time,
       device::BluetoothDevice::ConnectErrorCode error_code);
 
   // Callback for future BluetoothAdapter::ServicesDiscovered callback:
   // For now we just post a delayed task.
   // See: https://crbug.com/484504
   void OnServicesDiscovered(int thread_id,
                             int request_id,
                             const std::string& device_instance_id,
-                            const std::string& service_uuid);
+                            const std::string& service_uuid,
+                            base::TimeTicks start_time);
 
   // Callbacks for BluetoothGattCharacteristic::ReadRemoteCharacteristic.
   void OnCharacteristicValueRead(int thread_id,
                                  int request_id,
                                  const std::vector<uint8>& value);
   void OnCharacteristicReadValueError(
       int thread_id,
       int request_id,
       device::BluetoothGattService::GattErrorCode);
 
@@ skipping 25 matching lines @@
 
   // Must be last member, see base/memory/weak_ptr.h documentation
   base::WeakPtrFactory<BluetoothDispatcherHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_