Move device/core files to device/base directory.

device/core/BUILD.gn

Index: device/core/BUILD.gn
diff --git a/device/core/BUILD.gn b/device/core/BUILD.gn
deleted file mode 100644
index f4c8e1837bdb79ed8953545b28b2c4037193d98a..0000000000000000000000000000000000000000
--- a/device/core/BUILD.gn
+++ /dev/null
@@ -1,54 +0,0 @@
-# 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"
-
-  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" ]
-
-  deps = []
-
-  public_deps = [
-    "//base",
-  ]
-
-  if (use_udev) {
-    sources += [
-      "device_monitor_linux.cc",
-      "device_monitor_linux.h",
-    ]
-
-    deps += [ "//device/udev_linux" ]
-  }
-
-  if (is_win) {
-    libs = [ "setupapi.lib" ]
-  }
-}
-
-source_set("mocks") {
-  testonly = true
-
-  sources = [
-    "mock_device_client.cc",
-    "mock_device_client.h",
-  ]
-
-  deps = [
-    ":core",
-    "//device/hid:mocks",
-    "//device/usb:test_support",
-  ]
-}