Add IntDefs to generated Java enums.

components/cronet/android/BUILD.gn

 # Copyright 2015 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/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//testing/test.gni")
@@ skipping 39 matching lines @@
 
 java_cpp_enum("url_request_error_java") {
   sources = [
     "url_request_error.h",
   ]
 }
 
 # This target is a jar file containing classes that Cronet's javadocs
 # may reference but are not included in the javadocs themselves.
 android_library("cronet_javadoc_classpath") {
+  deps = [
+    "//third_party/android_tools:android_support_annotations_java",
+  ]
   srcjar_deps = [ ":url_request_error_java" ]
 }
 
 java_cpp_enum("http_cache_type_java") {
   sources = [
     "//components/cronet/url_request_context_config.h",
   ]
 }
 
 java_cpp_template("load_states_list") {
@@ skipping 847 matching lines @@
     ":cronet_package_copy_native_lib",
     ":cronet_package_copy_native_lib_unstripped",
     ":generate_javadoc",
     ":generate_licenses",
     ":jar_cronet_api_source",
     ":jar_cronet_other_source",
     ":jar_cronet_sample_source",
     ":repackage_extracted_jars",
   ]
 }