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

content/test/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 209 matching lines @@
     "//content/browser/speech/proto",
     "//content/child:for_content_tests",
     "//content/gpu",
     "//content/public/browser",
     "//content/public/child",
     "//content/public/renderer",
     "//content/public/utility",
     "//content/renderer:for_content_tests",
     "//content/shell:pak",
     "//content/utility:for_content_tests",
+    "//device/core",
     "//device/geolocation",
     "//device/nfc:mojo_bindings",
     "//ipc:test_support",
     "//media",
     "//media/capture",
     "//media/mojo/interfaces:image_capture",
     "//mojo/edk/system",
     "//mojo/edk/test:test_support",
     "//net:test_support",
     "//services/shell/public/cpp",
@@ skipping 1034 matching lines @@
     "../common/indexed_db/indexed_db_key_unittest.cc",
     "../common/input/event_with_latency_info_unittest.cc",
     "../common/input/gesture_event_stream_validator_unittest.cc",
     "../common/input/input_param_traits_unittest.cc",
     "../common/input/touch_event_stream_validator_unittest.cc",
     "../common/inter_process_time_ticks_converter_unittest.cc",
     "../common/mac/attributed_string_coder_unittest.mm",
     "../common/mac/font_descriptor_unittest.mm",
     "../common/manifest_util_unittest.cc",
     "../common/navigation_params_unittest.cc",
-    "../common/one_writer_seqlock_unittest.cc",
     "../common/origin_trials/trial_token_unittest.cc",
     "../common/origin_trials/trial_token_validator_unittest.cc",
     "../common/origin_util_unittest.cc",
     "../common/page_state_serialization_unittest.cc",
     "../common/page_zoom_unittest.cc",
     "../common/plugin_list_unittest.cc",
     "../common/sandbox_mac_compiler_unittest.mm",
     "../common/sandbox_mac_diraccess_unittest.mm",
     "../common/sandbox_mac_fontloading_unittest.mm",
     "../common/sandbox_mac_system_access_unittest.mm",
@@ skipping 404 matching lines @@
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
   }
 }
 
 group("fuzzers") {
   deps = [
     "//content/test/fuzzer",
   ]
 }