Factor getCertificateChain out of ConnectionPopupInfo

chrome/android/java/src/org/chromium/chrome/browser/pageinfo/CertificateChainHelper.java

Index: chrome/android/java/src/org/chromium/chrome/browser/pageinfo/CertificateChainHelper.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/pageinfo/CertificateChainHelper.java b/chrome/android/java/src/org/chromium/chrome/browser/pageinfo/CertificateChainHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..3d8a3b42bd880154a557263a6ab5a3df3f9b003d
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/pageinfo/CertificateChainHelper.java
@@ -0,0 +1,19 @@
+// Copyright 2016 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.pageinfo;
+
+import org.chromium.content_public.browser.WebContents;
+
+/**
+ * Helper class for obtaining site certificate chain from WebContents.
+ */
+public class CertificateChainHelper {
+
+    public static byte[][] getCertificateChain(WebContents webContents) {
+        return nativeGetCertificateChain(webContents);
+    }
+
+    private static native byte[][] nativeGetCertificateChain(WebContents webContents);
+}