Accept any string for currency code in PaymentRequest.

chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java
index 9a8eb409f93444fa77323776d246dd071df90d54..1eeaba1465fd253fd6684e46805101464d703676 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/CurrencyStringFormatter.java
@@ -22,13 +22,12 @@ public class CurrencyStringFormatter {
     private static final int DIGITS_AFTER_PERIOD_GROUP = 4;
 
     // Amount currency code pattern.
-    private static final String AMOUNT_CURRENCY_CODE_PATTERN = "^[A-Z]{3}$";
+    private static final int  MAX_CURRENCY_CODE_LEN = 2048;
 
     // Formatting constants.
     private static final int DIGIT_GROUPING_SIZE = 3;
 
     private final Pattern mAmountValuePattern;
-    private final Pattern mAmountCurrencyCodePattern;
 
     /**
      * The symbol for the currency specified on the bill. For example, the symbol for "USD" is "$".
@@ -59,7 +58,6 @@ public class CurrencyStringFormatter {
         assert userLocale != null : "userLocale should not be null";
 
         mAmountValuePattern = Pattern.compile(AMOUNT_VALUE_PATTERN);
-        mAmountCurrencyCodePattern = Pattern.compile(AMOUNT_CURRENCY_CODE_PATTERN);
 
         String currencySymbol;
         try {
@@ -100,8 +98,7 @@ public class CurrencyStringFormatter {
      * @return Whether the currency code is in valid format.
      */
     public boolean isValidAmountCurrencyCode(String amountCurrencyCode) {
-        return amountCurrencyCode != null
-                && mAmountCurrencyCodePattern.matcher(amountCurrencyCode).matches();
+        return amountCurrencyCode != null && amountCurrencyCode.length() <= MAX_CURRENCY_CODE_LEN;
     }
 
     /**