Move OneWriterSeqLock and SharedMemorySeqLockBuffer from content/ to device/base/synchronization

device/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
@@ skipping 41 matching lines @@
     "bluetooth/test/mock_bluetooth_cbperipheral_mac.h",
     "bluetooth/test/mock_bluetooth_cbperipheral_mac.mm",
     "bluetooth/test/mock_bluetooth_cbservice_mac.h",
     "bluetooth/test/mock_bluetooth_cbservice_mac.mm",
     "bluetooth/test/mock_bluetooth_central_manager_mac.h",
     "bluetooth/test/mock_bluetooth_central_manager_mac.mm",
     "bluetooth/test/test_bluetooth_adapter_observer.cc",
     "bluetooth/test/test_bluetooth_adapter_observer.h",
     "bluetooth/test/test_bluetooth_local_gatt_service_delegate.cc",
     "bluetooth/test/test_bluetooth_local_gatt_service_delegate.h",
+    "core/one_writer_seqlock_unittest.cc",
     "gamepad/gamepad_provider_unittest.cc",
     "generic_sensor/platform_sensor_provider_unittest.cc",
     "test/run_all_unittests.cc",
   ]
 
   deps = [
     "//base/test:test_support",
+    "//base/third_party/dynamic_annotations:dynamic_annotations",
     "//device/battery",
     "//device/battery:mojo_bindings",
     "//device/bluetooth",
     "//device/bluetooth:mocks",
     "//device/gamepad",
     "//device/gamepad:test_helpers",
     "//device/generic_sensor",
     "//device/generic_sensor:testing",
     "//device/geolocation:unittests",
     "//device/power_save_blocker",
@@ skipping 192 matching lines @@
     ]
     srcjar_deps = [ "//device/gamepad:java_enums_srcjar" ]
   }
 
   java_cpp_enum("bluetooth_test_javagen") {
     sources = [
       "bluetooth/test/bluetooth_test.h",
     ]
   }
 }