[Payments] Currency formatter for order amounts.

components/payments/BUILD.gn

 # Copyright 2016 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("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("payment_request") {
   sources = [
     "payment_request.mojom",
   ]
@@ skipping 32 matching lines @@
       ":payment_request",
       ":payment_validation",
       "//content/public/browser",
       "//mojo/public/cpp/bindings",
     ]
   }
 }
 
 static_library("payment_validation") {
   sources = [
+    "currency_formatter.cc",
+    "currency_formatter.h",
     "payment_details_validation.cc",
     "payment_details_validation.h",
     "payments_validators.cc",
     "payments_validators.h",
   ]
 
   deps = [
     ":payment_request",
     "//base",
+    "//third_party/icu:icu",
     "//third_party/re2:re2",
     "//url:url",
   ]
 }
 
-static_library("unit_tests") {
+source_set("unit_tests") {
   testonly = true
   sources = [
+    "currency_formatter_unittest.cc",
     "payments_validators_test.cc",
   ]
 
   deps = [
     ":payment_validation",
     "//testing/gtest",
+    "//third_party/icu:icu",
   ]
 }