PaymentRequest.abort() should return a promise.

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index 31f5db4b2ca539e22fd3bc5ef07aba960bc2dc13..bbe544e968f10edac4f3193093650363ea35a149 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -342,12 +342,15 @@ android_library("chrome_test_java") {
     "//components/web_restrictions:web_restrictions_java",
     "//content/public/android:content_java",
     "//content/public/test/android:content_java_test_support",
+    "//mojo/public/java:bindings",
+    "//mojo/public/java:system",
     "//net/android:net_java",
     "//net/android:net_java_test_support",
     "//printing:printing_java",
     "//sync:sync_java_test_support",
     "//sync/android:sync_java",
     "//sync/android:sync_javatests",
+    "//third_party/WebKit/public:android_mojo_bindings_java",
     "//third_party/WebKit/public:blink_headers_java",
     "//third_party/android_tools:android_support_design_java",
     "//third_party/android_tools:android_support_v13_java",