diff -r 000000000000 -r 6474c204b198 mobile/android/base/Assert.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/Assert.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+package org.mozilla.gecko;
+
+public class Assert
+{
+    private Assert() {}
+
+    public static void equals(Object a, Object b)
+    {
+        equals(a, b, null);
+    }
+
+    public static void equals(Object a, Object b, String message)
+    {
+        Assert.isTrue(a.equals(b), message);
+    }
+
+    public static void isTrue(boolean a)
+    {
+        isTrue(a, null);
+    }
+
+    public static void isTrue(boolean a, String message)
+    {
+        if (!AppConstants.DEBUG_BUILD) {
+            return;
+        }
+
+        if (!a) {
+            throw new AssertException(message);
+        }
+    }
+
+    public static class AssertException extends RuntimeException
+    {
+        private static final long serialVersionUID = 0L;
+
+        public AssertException(String message) {
+            super(message);
+        }
+    }
+}
\ No newline at end of file