Move JNI bindings for url_formatter from chrome to //components/url_formatter

components/url_formatter/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.
 
+if (is_android) {
+  import("//build/config/android/rules.gni")
+}
+
 static_library("url_formatter") {
   sources = [
+    "android/component_jni_registrar.cc",
+    "android/component_jni_registrar.h",
     "elide_url.cc",
     "elide_url.h",
     "url_fixer.cc",
     "url_fixer.h",
     "url_formatter.cc",
     "url_formatter.h",
+    "url_formatter_android.cc",
+    "url_formatter_android.h",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     "//base",
     "//net",
     "//third_party/icu",
     "//url",
   ]
 
-  if (!is_android) {
+  if (is_android) {
+    deps += [ "android:jni_headers" ]
+  } else {
     deps += [ "//ui/gfx" ]
   }
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "elide_url_unittest.cc",
     "url_fixer_unittest.cc",
     "url_formatter_unittest.cc",
   ]
 
   deps = [
     ":url_formatter",
     "//base",
     "//net",
     "//testing/gtest",
     "//ui/gfx",
     "//url",
   ]
 
   if (is_android) {
     deps -= [ "//ui/gfx" ]
   }
 }