Prevent usage of web payments API over insecure HTTPS.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java
new file mode 100644
index 0000000000000000000000000000000000000000..3cb6755532b5ca2240562f84aac69c1d16352590
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java
@@ -0,0 +1,26 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.payments;
+
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.content_public.browser.WebContents;
+
+/** SSL validity checker. */
+@JNINamespace("payments")
+public class SslValidityChecker {
+    /**
+     * Returns true for web contents with a valid SSL certificate.
+     *
+     * @param webContents The web contents to check.
+     * @return Whether the web contents have a valid SSL certificate.
+     */
+    public static boolean isValidSslCertificate(WebContents webContents) {
+        return nativeIsValidSslCertificate(webContents);
+    }
+
+    private SslValidityChecker() {}
+
+    private static native boolean nativeIsValidSslCertificate(WebContents webContents);
+}