Android content_browsertests: Allow processing java tasks in nested mode.

content/test/browser_test_message_pump_android.h

 // Copyright (c) 2013 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.
 
 #ifndef CONTENT_TEST_BROWSER_TEST_MESSAGE_PUMP_ANDROID_
 #define CONTENT_TEST_BROWSER_TEST_MESSAGE_PUMP_ANDROID_
 
+#include "base/android/jni_android.h"
 #include "base/compiler_specific.h"
 #include "base/message_pump_android.h"
 
 namespace content {
 
 // MessgePump to be used for content browsertests on Android.
 // This overrides the default ui message pump to allow nested loops.
-// Currently only native side messages are processed when running in nested
-// mode.
-// TODO(nileshagrawal): Add processing of messages on the Java side.
 class BrowserTestMessagePumpAndroid : public base::MessagePumpForUI {
  public:
   BrowserTestMessagePumpAndroid();
 
   virtual void Run(Delegate* delegate) OVERRIDE;
   virtual void Quit() OVERRIDE;
   virtual void ScheduleWork() OVERRIDE;
   virtual void ScheduleDelayedWork(
       const base::TimeTicks& delayed_work_time) OVERRIDE;
+  virtual void Start(Delegate* delegate) OVERRIDE;
+
+  static bool RegisterJni(JNIEnv* env);
 
  protected:
   virtual ~BrowserTestMessagePumpAndroid();
 
  private:
   // We may make recursive calls to Run, so we save state that needs to be
   // separate between them in this structure type.
   struct RunState;
 
   RunState* state_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserTestMessagePumpAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_BROWSER_TEST_MESSAGE_PUMP_ANDROID_