Do not start RunLoop of MessagePumpForUI in NestedMessagePumpAndroid

base/message_loop/message_pump_android.cc

 // Copyright (c) 2012 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.
 
 #include "base/message_loop/message_pump_android.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 111 matching lines @@
     system_message_handler_obj_.Reset();
   }
 
   if (run_loop_) {
     run_loop_->AfterRun();
     delete run_loop_;
     run_loop_ = NULL;
   }
 }
 
+bool MessagePumpForUI::IsRedundantQuitExpected() {
+  return false;
+}
+
 void MessagePumpForUI::ScheduleWork() {
   DCHECK(!system_message_handler_obj_.is_null());
 
   JNIEnv* env = base::android::AttachCurrentThread();
   DCHECK(env);
 
   Java_SystemMessageHandler_scheduleWork(env,
       system_message_handler_obj_.obj());
 }
 
@@ skipping 11 matching lines @@
       system_message_handler_obj_.obj(),
       delayed_work_time.ToInternalValue(), millis);
 }
 
 // static
 bool MessagePumpForUI::RegisterBindings(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace base