gn: Generalize process_version() and move it to build/util

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/process_version.gni")
 import("//build/util/version.gni")
-import("//chrome/version.gni")
 import("//testing/test.gni")
 import("//third_party/protobuf/proto_library.gni")
 import("//url/features.gni")
 
 assert(!is_component_build, "Cronet requires static library build.")
 
 declare_args() {
   cronet_enable_data_reduction_proxy_support = false
 }
 
@@ skipping 68 matching lines @@
   package_name = "org/chromium/net"
 }
 
 _generated_api_version_java_dir =
     "$target_gen_dir/templates/cronet_api_version_java"
 _generated_api_version_java =
     "$_generated_api_version_java_dir/org/chromium/net/ApiVersion.java"
 
 process_version("cronet_api_version_java") {
   template_file = "api/src/org/chromium/net/ApiVersion.template"
+  sources = [
+    "//build/util/LASTCHANGE",
+    "//chrome/VERSION",
+  ]
   output = _generated_api_version_java
 }
 
 zip("cronet_api_version_srcjar") {
   inputs = [
     _generated_api_version_java,
   ]
   output = "$target_gen_dir/$target_name.srcjar"
   base_dir = _generated_api_version_java_dir
   deps = [
     ":cronet_api_version_java",
   ]
 }
 
 _generated_impl_version_java_dir =
     "$target_gen_dir/templates/cronet_impl_version_java"
 _generated_impl_version_java =
     "$_generated_impl_version_java_dir/org/chromium/net/impl/ImplVersion.java"
 
 process_version("cronet_impl_version_java") {
   template_file = "java/src/org/chromium/net/impl/ImplVersion.template"
+  sources = [
+    "//build/util/LASTCHANGE",
+    "//chrome/VERSION",
+  ]
   output = _generated_impl_version_java
 }
 
 zip("cronet_impl_version_srcjar") {
   inputs = [
     _generated_impl_version_java,
   ]
   output = "$target_gen_dir/$target_name.srcjar"
   base_dir = _generated_impl_version_java_dir
   deps = [
@@ skipping 860 matching lines @@
       ":jar_cronet_api_source",
       ":jar_cronet_other_source",
       ":jar_cronet_sample_source",
       ":repackage_extracted_jars",
     ]
     if (current_cpu == "arm" && arm_version == 7) {
       deps += [ ":enforce_no_neon" ]
     }
   }
 }