Add PermissionPromptAndroid skeleton

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index fbcf347bd4d543ad19ed5d9158f8a6675333a573..d7473bf54f8cf901b430290209ef3af16eb9fffe 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -765,6 +765,8 @@ split_static_library("browser") {
     "permissions/permission_request.h",
     "permissions/permission_request_id.cc",
     "permissions/permission_request_id.h",
+    "permissions/permission_request_impl.cc",
+    "permissions/permission_request_impl.h",
     "permissions/permission_request_manager.cc",
     "permissions/permission_request_manager.h",
     "permissions/permission_uma_util.cc",
@@ -2776,8 +2778,6 @@ split_static_library("browser") {
       "obsolete_system/obsolete_system_win.cc",
       "pdf/pdf_extension_util.cc",
       "pdf/pdf_extension_util.h",
-      "permissions/permission_request_impl.cc",
-      "permissions/permission_request_impl.h",
       "power/process_power_collector.cc",
       "power/process_power_collector.h",
       "process_singleton_modal_dialog_lock.cc",
@@ -3311,6 +3311,8 @@ split_static_library("browser") {
       "permissions/grouped_permission_infobar_delegate_android.h",
       "permissions/permission_infobar_delegate.cc",
       "permissions/permission_infobar_delegate.h",
+      "permissions/permission_prompt_android.cc",
+      "permissions/permission_prompt_android.h",
       "permissions/permission_queue_controller.cc",
       "permissions/permission_queue_controller.h",
       "permissions/permission_update_infobar_delegate_android.cc",