Move payment mojom files to Blink.

To reduce Blink's dependencies, move payment_app.mojom and
payment_request.mojom from //components/payments/mojom to
//third_party/WebKit/public/platform/modules/payments.

Bug: 732668
Change-Id: I9e68c019f3ab7cf1120c05e241d8129ace5c289c
Reviewed-on: https://chromium-review.googlesource.com/533474
Commit-Queue: Rouslan Solomakhin <[email protected]>
Reviewed-by: Chris Palmer <[email protected]>
Reviewed-by: John Abd-El-Malek <[email protected]>
Cr-Commit-Position: refs/heads/master@{#479527}
diff --git a/components/payments/content/payment_request.h b/components/payments/content/payment_request.h
index e0ab3fa..ff8c2474 100644
--- a/components/payments/content/payment_request.h
+++ b/components/payments/content/payment_request.h
@@ -13,9 +13,9 @@
 #include "components/payments/content/payment_request_state.h"
 #include "components/payments/core/journey_logger.h"
 #include "components/payments/core/payment_request_delegate.h"
-#include "components/payments/mojom/payment_request.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
+#include "third_party/WebKit/public/platform/modules/payments/payment_request.mojom.h"
 #include "url/gurl.h"
 
 namespace content {