The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d9595aa60bba38244a0099891f8b982575b5e390

commit d9595aa60bba38244a0099891f8b982575b5e390
Author: sebsg <sebsg@chromium.org>
Date: Tue Oct 25 15:34:03 2016

[Payments] Field trial and flag to abort payment request if no card.

BUG= 657980 

Review-Url: https://codereview.chromium.org/2437593007
Cr-Commit-Position: refs/heads/master@{#427361}

[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/android/java/src/org/chromium/chrome/browser/ChromeFeatureList.java
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/android/java_sources.gni
[add] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestFieldTrialTest.java
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/app/generated_resources.grd
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/browser/about_flags.cc
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/browser/android/chrome_feature_list.cc
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/chrome/browser/android/chrome_feature_list.h
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/testing/variations/fieldtrial_testing_config.json
[modify] https://crrev.com/d9595aa60bba38244a0099891f8b982575b5e390/tools/metrics/histograms/histograms.xml

Your change meets the bar and is auto-approved for M55 (branch: 2883)