Move //webapk to //chrome/android/webapk

webapk/libs/runtime_library/BUILD.gn

-# Copyright 2016 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/android/rules.gni")
-import("//webapk/libs/runtime_library_version.gni")
-
-# runtime_library_version.gni must be incremented whenever the runtime library is
-# updated. The WebAPK re-extracts the runtime library from the Chrome APK when
-# |runtime_library_version| is incremented.
-
-# Whenever this constant is changed, WebApkUtils#getRuntimeDexName() must also
-# be changed.
-runtime_library_dex_asset_name = "web_apk$runtime_library_version.dex"
-
-android_aidl("webapk_service_aidl") {
-  import_include = "src/org/chromium/webapk/lib/runtime_library"
-  interface_file = "src/org/chromium/webapk/lib/runtime_library/common.aidl"
-  sources = [
-    "src/org/chromium/webapk/lib/runtime_library/IWebApkApi.aidl",
-  ]
-}
-
-android_library("runtime_library") {
-  dex_path = "$target_gen_dir/$runtime_library_dex_asset_name"
-  java_files =
-      [ "src/org/chromium/webapk/lib/runtime_library/WebApkServiceImpl.java" ]
-  chromium_code = false
-  srcjar_deps = [ ":webapk_service_aidl" ]
-}
-
-android_assets("runtime_library_assets") {
-  write_file("$target_gen_dir/web_apk_dex_version.txt", runtime_library_version)
-
-  sources = [
-    "$target_gen_dir/$runtime_library_dex_asset_name",
-    "$target_gen_dir/web_apk_dex_version.txt",
-  ]
-  disable_compression = true
-
-  deps = [
-    ":runtime_library",
-  ]
-}
-
-junit_binary("webapk_runtime_library_junit_tests") {
-  java_files = [ "junit/src/org/chromium/webapk/lib/runtime_library/WebApkServiceImplTest.java" ]
-  deps = [
-    ":runtime_library",
-    "//base:base_java",
-    "//base:base_junit_test_support",
-  ]
-}