Migrate to Flogger (green)

This is a 'green' Flogger migration CL. Green CLs are intended to be as
safe as possible and should be easy to review and submit.

No changes should be necessary to the code itself prior to submission,
but small changes to BUILD files may be required.

Changes within files are completely independent of each other, so this CL
can be safely split up for review using tools such as Rosie.

For more information, see []
Base CL: 197826149

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=198560170

java/google/registry/ui/server/registrar/RegistrarPaymentAction.java

@@ -28,7 +28,7 @@ import com.braintreegateway.TransactionRequest;
 import com.braintreegateway.ValidationError;
 import com.braintreegateway.ValidationErrors;
 import com.google.common.collect.ImmutableMap;
-import com.google.common.logging.FormattingLogger;
+import com.google.common.flogger.FluentLogger;
 import com.google.re2j.Pattern;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.model.registrar.Registrar;
@@ -99,7 +99,7 @@ import org.joda.money.Money;
 )
 public final class RegistrarPaymentAction implements Runnable, JsonAction {
 
-  private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
+  private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
   private static final FormField<String, BigDecimal> AMOUNT_FIELD =
       FormField.named("amount")
@@ -158,7 +158,7 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
   @Override
   public Map<String, Object> handleJsonRequest(Map<String, ?> json) {
     Registrar registrar = sessionUtils.getRegistrarForAuthResult(request, authResult);
-    logger.infofmt("Processing payment: %s", json);
+    logger.atInfo().log("Processing payment: %s", json);
     String paymentMethodNonce;
     Money amount;
     String merchantAccountId;
@@ -177,7 +177,7 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
         throw new FormFieldException(CURRENCY_FIELD.name(), "Unsupported currency.");
       }
     } catch (FormFieldException e) {
-      logger.warning(e, "Form field error in RegistrarPaymentAction.");
+      logger.atWarning().withCause(e).log("Form field error in RegistrarPaymentAction.");
       return JsonResponseHelper.createFormFieldError(e.getMessage(), e.getFieldName());
     }
     Result<Transaction> result =
@@ -222,10 +222,11 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
     Money amount =
         Money.of(CurrencyUnit.of(transaction.getCurrencyIsoCode()),
             transaction.getAmount().stripTrailingZeros());
-    logger.infofmt("Transaction for %s via %s %s with ID: %s",
+    logger.atInfo().log(
+        "Transaction for %s via %s %s with ID: %s",
         amount,
-        transaction.getPaymentInstrumentType(),  // e.g. credit_card, paypal_account
-        transaction.getStatus(),                 // e.g. SUBMITTED_FOR_SETTLEMENT
+        transaction.getPaymentInstrumentType(), // e.g. credit_card, paypal_account
+        transaction.getStatus(), // e.g. SUBMITTED_FOR_SETTLEMENT
         transaction.getId());
     return JsonResponseHelper
         .create(SUCCESS, "Payment processed successfully", asList(
@@ -245,7 +246,8 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
    *     Braintree - Transactions/Declines</a>
    */
   private Map<String, Object> handleProcessorDeclined(Transaction transaction) {
-    logger.warningfmt("Processor declined: %s %s",
+    logger.atWarning().log(
+        "Processor declined: %s %s",
         transaction.getProcessorResponseCode(), transaction.getProcessorResponseText());
     return JsonResponseHelper.create(ERROR,
         "Payment declined: " + transaction.getProcessorResponseText());
@@ -263,7 +265,8 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
    *     Braintree - Transactions/Declines</a>
    */
   private Map<String, Object> handleSettlementDecline(Transaction transaction) {
-    logger.warningfmt("Settlement declined: %s %s",
+    logger.atWarning().log(
+        "Settlement declined: %s %s",
         transaction.getProcessorSettlementResponseCode(),
         transaction.getProcessorSettlementResponseText());
     return JsonResponseHelper.create(ERROR,
@@ -286,7 +289,7 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
    *     Braintree - Fraud Tools/Overview</a>
    */
   private Map<String, Object> handleRejection(Transaction transaction) {
-    logger.warningfmt("Gateway rejection: %s", transaction.getGatewayRejectionReason());
+    logger.atWarning().log("Gateway rejection: %s", transaction.getGatewayRejectionReason());
     switch (transaction.getGatewayRejectionReason()) {
       case DUPLICATE:
         return JsonResponseHelper.create(ERROR, "Payment rejected: Possible duplicate.");
@@ -307,7 +310,8 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
 
   /** Handles a miscellaneous transaction processing error response. */
   private Map<String, Object> handleMiscProcessorError(Transaction transaction) {
-    logger.warningfmt("Error processing transaction: %s %s %s",
+    logger.atWarning().log(
+        "Error processing transaction: %s %s %s",
         transaction.getStatus(),
         transaction.getProcessorResponseCode(),
         transaction.getProcessorResponseText());
@@ -330,7 +334,8 @@ public final class RegistrarPaymentAction implements Runnable, JsonAction {
     List<ValidationError> errors = validationErrors.getAllDeepValidationErrors();
     verify(!errors.isEmpty(), "Payment failed but validation error list was empty");
     for (ValidationError error : errors) {
-      logger.warningfmt("Payment validation failed on field: %s\nCode: %s\nMessage: %s",
+      logger.atWarning().log(
+          "Payment validation failed on field: %s\nCode: %s\nMessage: %s",
           error.getAttribute(), error.getCode(), error.getMessage());
     }
     return JsonResponseHelper