android: Add debug url to throw uncaught exception

base/android/java/src/org/chromium/base/ThrowUncaughtException.java

Index: base/android/java/src/org/chromium/base/ThrowUncaughtException.java
diff --git a/base/android/java/src/org/chromium/base/ThrowUncaughtException.java b/base/android/java/src/org/chromium/base/ThrowUncaughtException.java
new file mode 100644
index 0000000000000000000000000000000000000000..f3f1f3e7450aaeb2eae540aada25b308da999783
--- /dev/null
+++ b/base/android/java/src/org/chromium/base/ThrowUncaughtException.java
@@ -0,0 +1,23 @@
+// 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.base;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.MainDex;
+import org.chromium.base.annotations.SuppressFBWarnings;
+
+@MainDex
+@SuppressFBWarnings("NM_CLASS_NOT_EXCEPTION")
+abstract class ThrowUncaughtException {
+    @CalledByNative
+    private static void post() {
+        ThreadUtils.postOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                throw new RuntimeException("Intentional exception not caught by JNI");
+            }
+        });
+    }
+}