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

components/payments/android/payments_jni_registrar.cc

 // Copyright 2016 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/android/payments_jni_registrar.h"
 
 #include <string>
 #include <utility>
 
 #include "components/payments/payment_details_validation.h"
 #include "components/payments/payment_request.mojom.h"
 #include "jni/PaymentValidator_jni.h"
 
 namespace payments {
 
 jboolean ValidatePaymentDetails(
     JNIEnv* env,
     const base::android::JavaParamRef<jclass>& jcaller,
     const base::android::JavaParamRef<jobject>& buffer) {
   jbyte* buf_in = static_cast<jbyte*>(env->GetDirectBufferAddress(buffer));
   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);
 }
 
 }  // namespace payments
 
 bool RegisterPaymentValidator(JNIEnv* env) {
   return payments::RegisterNativesImpl(env);
 }