Fix crash in release mode of payment manifest parser.

components/payments/content/payment_manifest_parser_host.cc

 // Copyright 2017 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.
 
 #include "components/payments/content/payment_manifest_parser_host.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 64 matching lines @@
     const std::vector<GURL>& web_app_manifest_urls) {
   const auto& pending_callback_it =
       pending_payment_method_callbacks_.find(callback_identifier);
   if (pending_callback_it == pending_payment_method_callbacks_.end()) {
     // If unable to find the pending callback, then something went wrong in the
     // utility process. Stop the utility process and notify all callbacks.
     OnUtilityProcessStopped();
     return;
   }
 
-  PaymentMethodCallback callback = std::move(pending_callback_it->second);
-  pending_payment_method_callbacks_.erase(pending_callback_it);
-
   const size_t kMaximumNumberOfWebAppUrls = 100U;
   if (web_app_manifest_urls.size() > kMaximumNumberOfWebAppUrls) {
     // If more than 100 items, then something went wrong in the utility
     // process. Stop the utility process and notify all callbacks.
     OnUtilityProcessStopped();
     return;
   }
 
   for (const auto& url : web_app_manifest_urls) {
     if (!url.is_valid() || !url.SchemeIs(url::kHttpsScheme)) {
       // If not a valid URL with HTTPS scheme, then something went wrong in the
       // utility process. Stop the utility process and notify all callbacks.
       OnUtilityProcessStopped();
       return;
     }
   }
 
+  PaymentMethodCallback callback = std::move(pending_callback_it->second);
+  pending_payment_method_callbacks_.erase(pending_callback_it);
+
   // Can trigger synchronous deletion of this object, so can't access any of
   // the member variables after this block.
   std::move(callback).Run(web_app_manifest_urls);
 }
 
 void PaymentManifestParserHost::OnWebAppParse(
     int64_t callback_identifier,
     std::vector<mojom::WebAppManifestSectionPtr> manifest) {
   const auto& pending_callback_it =
       pending_web_app_callbacks_.find(callback_identifier);
@@ skipping 46 matching lines @@
 
   for (auto& callback : web_app_callbacks) {
     // Can trigger synchronous deletion of this object, so can't access any of
     // the member variables after this line.
     std::move(callback.second)
         .Run(std::vector<mojom::WebAppManifestSectionPtr>());
   }
 }
 
 }  // namespace payments