PaymentApp: Implement respondWith() in PaymentRequestEvent. (blink side)

third_party/WebKit/Source/modules/modules_idl_files.gni

Index: third_party/WebKit/Source/modules/modules_idl_files.gni
diff --git a/third_party/WebKit/Source/modules/modules_idl_files.gni b/third_party/WebKit/Source/modules/modules_idl_files.gni
index 81fb00c9343345448b1de130ec4ecfc207907501..8780787197fa57668b3235f3c27b8018c72b0713 100644
--- a/third_party/WebKit/Source/modules/modules_idl_files.gni
+++ b/third_party/WebKit/Source/modules/modules_idl_files.gni
@@ -474,6 +474,7 @@ modules_dictionary_idl_files =
                     "payments/BasicCardRequest.idl",
                     "payments/PaymentAppManifest.idl",
                     "payments/PaymentAppOption.idl",
+                    "payments/PaymentAppResponse.idl",
                     "payments/PaymentAppRequest.idl",
                     "payments/PaymentCurrencyAmount.idl",
                     "payments/PaymentDetails.idl",
@@ -849,6 +850,8 @@ generated_modules_dictionary_files = [
   "$blink_modules_output_dir/payments/PaymentAppManifest.h",
   "$blink_modules_output_dir/payments/PaymentAppOption.cpp",
   "$blink_modules_output_dir/payments/PaymentAppOption.h",
+  "$blink_modules_output_dir/payments/PaymentAppResponse.cpp",
+  "$blink_modules_output_dir/payments/PaymentAppResponse.h",
   "$blink_modules_output_dir/payments/PaymentAppRequest.cpp",
   "$blink_modules_output_dir/payments/PaymentAppRequest.h",
   "$blink_modules_output_dir/payments/PaymentCurrencyAmount.cpp",