[Clean up] Introduce a BLUETOOTH_EXPORT macro to control symbol visibility outside of //device/blue…

device/bluetooth/bluetooth.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       # GN version: //device/bluetooth
       'target_name': 'device_bluetooth',
-      'type': 'static_library',
+      'type': '<(component)',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../net/net.gyp:net',
         '../../ui/base/ui_base.gyp:ui_base',
         'bluetooth_strings.gyp:device_bluetooth_strings',
       ],
       'sources': [
         # Note: file list duplicated in GN build.
         'bluetooth_adapter.cc',
         'bluetooth_adapter.h',
@@ skipping 12 matching lines @@
         'bluetooth_device_chromeos.cc',
         'bluetooth_device_chromeos.h',
         'bluetooth_device_mac.h',
         'bluetooth_device_mac.mm',
         'bluetooth_device_win.cc',
         'bluetooth_device_win.h',
         'bluetooth_discovery_manager_mac.mm',
         'bluetooth_discovery_manager_mac.h',
         'bluetooth_discovery_session.cc',
         'bluetooth_discovery_session.h',
+        'bluetooth_export.h',
         'bluetooth_gatt_characteristic.cc',
         'bluetooth_gatt_characteristic.h',
         'bluetooth_gatt_connection.cc',
         'bluetooth_gatt_connection.h',
         'bluetooth_gatt_connection_chromeos.cc',
         'bluetooth_gatt_connection_chromeos.h',
         'bluetooth_gatt_descriptor.cc',
         'bluetooth_gatt_descriptor.h',
         'bluetooth_gatt_notify_session.cc',
         'bluetooth_gatt_notify_session.h',
@@ skipping 31 matching lines @@
         'bluetooth_socket_net.h',
         'bluetooth_socket_thread.cc',
         'bluetooth_socket_thread.h',
         'bluetooth_socket_win.cc',
         'bluetooth_socket_win.h',
         'bluetooth_task_manager_win.cc',
         'bluetooth_task_manager_win.h',
         'bluetooth_uuid.cc',
         'bluetooth_uuid.h',
       ],
+      'defines': [
+        'BLUETOOTH_IMPLEMENTATION',
+      ],
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../../build/linux/system.gyp:dbus',
             '../../chromeos/chromeos.gyp:chromeos',
             '../../dbus/dbus.gyp:dbus',
           ],
           'export_dependent_settings': [
             '../../build/linux/system.gyp:dbus'
           ]
@@ skipping 50 matching lines @@
         'test/mock_bluetooth_gatt_notify_session.cc',
         'test/mock_bluetooth_gatt_notify_session.h',
         'test/mock_bluetooth_gatt_service.cc',
         'test/mock_bluetooth_gatt_service.h',
         'test/mock_bluetooth_socket.cc',
         'test/mock_bluetooth_socket.h',
       ],
     },
   ],
 }