Add an empty Android implementation of the PhysicalWebDataSource

chrome/browser/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 3101 matching lines @@
       "android/offline_pages/request_coordinator_factory.cc",
       "android/offline_pages/request_coordinator_factory.h",
       "android/omnibox/answers_image_bridge.cc",
       "android/omnibox/answers_image_bridge.h",
       "android/omnibox/autocomplete_controller_android.cc",
       "android/omnibox/autocomplete_controller_android.h",
       "android/omnibox/omnibox_prerender.cc",
       "android/omnibox/omnibox_prerender.h",
       "android/password_ui_view_android.cc",
       "android/password_ui_view_android.h",
+      "android/physical_web/physical_web_data_source_android.cc",
+      "android/physical_web/physical_web_data_source_android.h",
       "android/policy/policy_auditor.cc",
       "android/policy/policy_auditor.h",
       "android/precache/precache_launcher.cc",
       "android/precache/precache_launcher.h",
       "android/preferences/autofill/autofill_profile_bridge.cc",
       "android/preferences/autofill/autofill_profile_bridge.h",
       "android/preferences/important_sites_util.cc",
       "android/preferences/important_sites_util.h",
       "android/preferences/pref_service_bridge.cc",
       "android/preferences/pref_service_bridge.h",
@@ skipping 1126 matching lines @@
   # linking all of the test support.
   static_library("pepper_cdm_test_constants") {
     testonly = true
     visibility = [ "//chrome/*" ]
     sources = [
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }