Rename remaining types so that all begin Payment*

third_party/WebKit/public/platform/modules/payments/payment_request.mojom

Index: third_party/WebKit/public/platform/modules/payments/payment_request.mojom
diff --git a/third_party/WebKit/public/platform/modules/payments/payment_request.mojom b/third_party/WebKit/public/platform/modules/payments/payment_request.mojom
index 1cbced4beb598794ccd26bf4e17c10047bcff868..685baf927ca3a6a7e862a8d433da65b57ad0ba5e 100644
--- a/third_party/WebKit/public/platform/modules/payments/payment_request.mojom
+++ b/third_party/WebKit/public/platform/modules/payments/payment_request.mojom
@@ -60,7 +60,7 @@ interface PaymentRequestClient {
 // The currency amount that the renderer provides to the browser process. The
 // browser shows the amount in UI and forwards it on to the payment app, if it
 // requires the amount.
-struct CurrencyAmount {
+struct PaymentCurrencyAmount {
   // ISO 4217 currency code. Three upper case ASCII letters.
   string currency_code;
 
@@ -71,20 +71,20 @@ struct CurrencyAmount {
 
 struct PaymentItem {
   string label;
-  CurrencyAmount amount;
+  PaymentCurrencyAmount amount;
 };
 
-struct ShippingOption {
+struct PaymentShippingOption {
   string id;
   string label;
-  CurrencyAmount amount;
+  PaymentCurrencyAmount amount;
   bool selected;
 };
 
 struct PaymentDetails {
   PaymentItem total;
   array<PaymentItem> display_items;
-  array<ShippingOption> shipping_options;
+  array<PaymentShippingOption> shipping_options;
 };
 
 struct PaymentOptions {