Delayload bluetooth imports on Windows.

device/device.gyp

 # Copyright (c) 2012 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': [
     {
@@ skipping 31 matching lines @@
         'bluetooth/bluetooth_utils.h',
       ],
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../build/linux/system.gyp:dbus',
             '../chromeos/chromeos.gyp:chromeos',
             '../dbus/dbus.gyp:dbus',
           ]
         }],
+        ['OS=="win"', {
+          'all_dependent_settings': {
+            'msvs_settings': {
+              'VCLinkerTool': {
+                'DelayLoadDLLs': [
+                  # Despite MSDN stating that Bthprops.dll contains the
+                  # symbols declared by bthprops.lib, they actually reside here:
+                  'Bthprops.cpl',
+                ],
+              },
+            },
+          },
+        }],
       ],
     },
     {
       'target_name': 'device_bluetooth_mocks',
       'type': 'static_library',
       'dependencies': [
         'device_bluetooth',
         '../testing/gmock.gyp:gmock',
       ],
       'sources': [
@@ skipping 34 matching lines @@
           'dependencies': [
             '../build/linux/system.gyp:dbus',
             '../chromeos/chromeos.gyp:chromeos_test_support',
             '../dbus/dbus.gyp:dbus',
           ]
         }],
       ],
     },
   ],
 }