Separate JNI registration with initialization

content/shell/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")
 import("//build/module_args/v8.gni")
 import("//third_party/icu/config.gni")
 
 generate_jni("content_shell_jni_headers") {
@@ skipping 12 matching lines @@
   deps = [
     ":content_shell_jni_headers",
     "//content/shell:content_shell_lib",
     "//content/shell:pak",
     "//components/crash/browser",
     "//skia",
     "//media/base/android",
   ]
   sources = [
     "shell_library_loader.cc",
-    "shell_library_loader.h",
   ]
   if (is_android_webview_build) {
     ldflags = [ "-lgabi++" ]
   }
 }
 
 android_resources("content_shell_java_resources") {
   testonly = true
   resource_dirs = [ "java/res" ]
   custom_package = "org.chromium.content_shell"
@@ skipping 181 matching lines @@
 
   # GYP: //content/content_tests.gypi:chromium_android_linker_test_jni_headers
   generate_jni("linker_test_jni_headers") {
     testonly = true
     jni_package = "content/shell"
     sources = [
       "linker_test_apk/src/org/chromium/chromium_linker_test_apk/LinkerTests.java",
     ]
   }
 }