[Payment Request] Change the lifetime management of PaymentRequestImpl

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",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
   ]
 }
 
 mojom("payment_app") {
   sources = [
     "payment_app.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
   ]
 }
 
+# TODO(crbug.com/679381): Create a layered component to that we can remove the
+# iOS check here (iOS strict DEPS checker doesn't like the //content dependency
+# below).
+if (!is_ios) {
+  static_library("payment_request_impl") {
+    sources = [
+      "payment_request.cc",
+      "payment_request.h",
+      "payment_request_delegate.h",
+      "payment_request_web_contents_manager.cc",
+      "payment_request_web_contents_manager.h",
+    ]
+
+    deps = [
+      ":payment_request",
+      ":payment_validation",
+      "//content/public/browser",
+      "//mojo/public/cpp/bindings",
+    ]
+  }
+}
+
 static_library("payment_validation") {
   sources = [
     "payment_details_validation.cc",
     "payment_details_validation.h",
     "payments_validators.cc",
     "payments_validators.h",
   ]
 
   deps = [
     ":payment_request",
     "//base",
     "//third_party/re2:re2",
     "//url:url",
   ]
 }
 
 static_library("unit_tests") {
   testonly = true
   sources = [
     "payments_validators_test.cc",
   ]
 
   deps = [
     ":payment_validation",
     "//testing/gtest",
   ]
 }