GN: Remove "outputs" parameter for java_cpp_enum()

base/BUILD.gn

 # Copyright (c) 2013 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/compiler/compiler.gni")
 import("//build/config/nacl/config.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
@@ skipping 1704 matching lines @@
   # GYP: //base.gyp:base_java_library_load_from_apk_status_codes
   # GYP: //base.gyp:base_java_library_process_type
   # GYP: //base.gyp:base_java_memory_pressure_level
   java_cpp_enum("base_android_java_enums_srcjar") {
     sources = [
       "android/application_status_listener.h",
       "android/library_loader/library_load_from_apk_status_codes.h",
       "android/library_loader/library_loader_hooks.h",
       "memory/memory_pressure_listener.h",
     ]
-    outputs = [
-      "org/chromium/base/ApplicationState.java",
-      "org/chromium/base/library_loader/LibraryLoadFromApkStatusCodes.java",
-      "org/chromium/base/library_loader/LibraryProcessType.java",
-      "org/chromium/base/MemoryPressureLevel.java",
-    ]
   }
 
   # GYP: //base/base.gyp:base_native_libraries_gen
   java_cpp_template("base_native_libraries_gen") {
     sources = [
       "android/java/templates/NativeLibraries.template",
     ]
     package_name = "org/chromium/base/library_loader"
   }
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }