Add src_files to src_jar GN template

net/android/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/android/config.gni")
 import("//build/config/android/rules.gni")
 
 android_library("net_java") {
-  java_files = [
+  deps = [
+    "//base:base_java",
+    "//third_party/android_tools:android_support_annotations_java",
+  ]
+  srcjar_deps = [
+    ":net_errors_java",
+    ":net_java_srcjar",
+    ":net_android_java_enums_srcjar",
+  ]
+}
+
+# Creates srcjar that contains sources for "net_java".
+zip("net_java_srcjar") {
+  inputs = [
     "java/src/org/chromium/net/AndroidCellularSignalStrength.java",
     "java/src/org/chromium/net/AndroidCertVerifyResult.java",
     "java/src/org/chromium/net/AndroidKeyStore.java",
     "java/src/org/chromium/net/AndroidNetworkLibrary.java",
     "java/src/org/chromium/net/AndroidTrafficStats.java",
     "java/src/org/chromium/net/GURLUtils.java",
     "java/src/org/chromium/net/HttpNegotiateAuthenticator.java",
     "java/src/org/chromium/net/HttpNegotiateConstants.java",
     "java/src/org/chromium/net/NetStringUtil.java",
     "java/src/org/chromium/net/NetworkChangeNotifier.java",
     "java/src/org/chromium/net/NetworkChangeNotifierAutoDetect.java",
     "java/src/org/chromium/net/ProxyChangeListener.java",
     "java/src/org/chromium/net/RegistrationPolicyAlwaysRegister.java",
     "java/src/org/chromium/net/RegistrationPolicyApplicationStatus.java",
     "java/src/org/chromium/net/X509Util.java",
   ]
-  deps = [
-    "//base:base_java",
-    "//third_party/android_tools:android_support_annotations_java",
-  ]
-  srcjar_deps = [
-    ":net_errors_java",
-    ":net_android_java_enums_srcjar",
-  ]
+  output = "$target_gen_dir/$target_name.srcjar"
+  base_dir = rebase_path("//net/android/java/src")
 }
 
 android_aidl("embedded_test_server_aidl") {
   interface_file = "../test/android/javatests/src/org/chromium/net/test/IEmbeddedTestServerInterface.aidl"
   sources = [
     "../test/android/javatests/src/org/chromium/net/test/IEmbeddedTestServerImpl.aidl",
   ]
 }
 
 android_library("net_java_test_support") {
@@ skipping 117 matching lines @@
   java_files =
       [ "junit/src/org/chromium/net/HttpNegotiateAuthenticatorTest.java" ]
   deps = [
     ":net_java",
     "//base:base_java",
     "//base:base_java_test_support",
     "//third_party/hamcrest:hamcrest_java",
   ]
   srcjar_deps = [ "//base:base_build_config_gen" ]
 }