[PlayBilling] Move AndroidPaymentApp#invokePaymentApp into helpers

Before Change:
buildExtra and its dependencies live in AndroidPaymentApp.

After Change:
buildExtra and its dependencies live in WebPaymentIntentHelper.

Change:
1. create WebPaymentIntentHelper
2. move AndroidPaymentApp#buildExtra() and its dependencies into
WebPaymentIntentHelper.

Bug: 1057488

Change-Id: I79e873d28a7bcbe119ac2966590d2892ecf76f40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2082479
Commit-Queue: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746510}

chrome/android/chrome_java_sources.gni

@@ -1265,6 +1265,7 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java",
   "java/src/org/chromium/chrome/browser/payments/SupportedDelegations.java",
   "java/src/org/chromium/chrome/browser/payments/UriUtils.java",
+  "java/src/org/chromium/chrome/browser/payments/WebPaymentIntentHelper.java",
   "java/src/org/chromium/chrome/browser/payments/handler/PaymentHandlerCoordinator.java",
   "java/src/org/chromium/chrome/browser/payments/handler/PaymentHandlerMediator.java",
   "java/src/org/chromium/chrome/browser/payments/handler/PaymentHandlerProperties.java",

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

@@ -38,7 +38,7 @@ public class AndroidPaymentAppFactory implements PaymentAppFactoryInterface {
         PackageManagerDelegate packageManagerDelegate = new PackageManagerDelegate();
         // Note that all Android payment apps must support org.chromium.intent.action.PAY action
         // without additional data to be detected.
-        Intent payIntent = new Intent(AndroidPaymentApp.ACTION_PAY);
+        Intent payIntent = new Intent(WebPaymentIntentHelper.ACTION_PAY);
         return !packageManagerDelegate.getActivitiesThatCanRespondToIntent(payIntent).isEmpty();
     }
 
@@ -52,7 +52,7 @@ public class AndroidPaymentAppFactory implements PaymentAppFactoryInterface {
         Map<String, Pair<String, Drawable>> paymentAppsInfo = new HashMap<>();
 
         PackageManagerDelegate packageManagerDelegate = new PackageManagerDelegate();
-        Intent payIntent = new Intent(AndroidPaymentApp.ACTION_PAY);
+        Intent payIntent = new Intent(WebPaymentIntentHelper.ACTION_PAY);
         List<ResolveInfo> matches =
                 packageManagerDelegate.getActivitiesThatCanRespondToIntent(payIntent);
         if (matches.isEmpty()) return paymentAppsInfo;

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

@@ -189,7 +189,7 @@ public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
     /* package */ void findAndroidPaymentApps() {
         List<ResolveInfo> allInstalledPaymentApps =
                 mPackageManagerDelegate.getActivitiesThatCanRespondToIntentWithMetaData(
-                        new Intent(AndroidPaymentApp.ACTION_PAY));
+                        new Intent(WebPaymentIntentHelper.ACTION_PAY));
         if (allInstalledPaymentApps.isEmpty()) {
             onAllAppsFoundAndValidated();
             return;