Move device/core files to device/base directory.

device/base/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/features.gni")
 
-component("core") {
-  output_name = "device_core"
+component("base") {
+  output_name = "device_base"
 
   sources = [
     "device_client.cc",
     "device_client.h",
     "device_info_query_win.cc",
     "device_info_query_win.h",
     "device_monitor_win.cc",
     "device_monitor_win.h",
   ]
 
-  defines = [ "DEVICE_CORE_IMPLEMENTATION" ]
+  defines = [ "DEVICE_BASE_IMPLEMENTATION" ]
 
   deps = []
 
   public_deps = [
     "//base",
   ]
 
   if (use_udev) {
     sources += [
       "device_monitor_linux.cc",
@@ skipping 10 matching lines @@
 
 source_set("mocks") {
   testonly = true
 
   sources = [
     "mock_device_client.cc",
     "mock_device_client.h",
   ]
 
   deps = [
-    ":core",
+    ":base",
     "//device/hid:mocks",
     "//device/usb:test_support",
   ]
 }