Revert of [Web Payments] Mojom namespace blink -> payments

components/payments/android/payments_jni_registrar.cc

Index: components/payments/android/payments_jni_registrar.cc
diff --git a/components/payments/android/payments_jni_registrar.cc b/components/payments/android/payments_jni_registrar.cc
index 974ce895011180604febd8121a5f126a7ebb1504..37bf6024a8103e961ca9a3f4496769f2747734f6 100644
--- a/components/payments/android/payments_jni_registrar.cc
+++ b/components/payments/android/payments_jni_registrar.cc
@@ -21,8 +21,9 @@
   jlong buf_size = env->GetDirectBufferCapacity(buffer);
   mojo::Array<uint8_t> mojo_buffer = mojo::Array<uint8_t>::New(buf_size);
   memcpy(&mojo_buffer[0], buf_in, buf_size);
-  mojom::PaymentDetailsPtr details;
-  if (!mojom::PaymentDetails::Deserialize(std::move(mojo_buffer), &details))
+  blink::mojom::PaymentDetailsPtr details;
+  if (!blink::mojom::PaymentDetails::Deserialize(std::move(mojo_buffer),
+                                                 &details))
     return false;
   std::string unused_error_message;
   return payments::validatePaymentDetails(details, &unused_error_message);