Making a way to create thread with a Java Looper for Android

base/message_loop/message_loop.h

Index: base/message_loop/message_loop.h
diff --git a/base/message_loop/message_loop.h b/base/message_loop/message_loop.h
index 6f71a859930b506202e98af16d560188bd535e40..f6aed477e880fbe9b47098d074166e98195a9399 100644
--- a/base/message_loop/message_loop.h
+++ b/base/message_loop/message_loop.h
@@ -109,10 +109,17 @@ class BASE_EXPORT MessageLoop : public MessagePump::Delegate {
   //   This type of ML also supports asynchronous IO.  See also
   //   MessageLoopForIO.
   //
+  // TYPE_JAVA
+  //   This type of ML is backed by a Java message handler which is responsible
+  //   for running the tasks added to the ML. This is only for use on Android.
+  //
   enum Type {
     TYPE_DEFAULT,
     TYPE_UI,
-    TYPE_IO
+    TYPE_IO,
+#if defined(OS_ANDROID)
+    TYPE_JAVA,
+#endif // defined(OS_ANDROID)
   };
 
   // Normally, it is not necessary to instantiate a MessageLoop.  Instead, it