Android content_browsertests: Allow processing java tasks in nested mode.

content/test/browser_test_message_pump_android.h

Index: content/test/browser_test_message_pump_android.h
diff --git a/content/test/browser_test_message_pump_android.h b/content/test/browser_test_message_pump_android.h
index f160af861d84033938e7f330bf0564ee92e27ba8..d19b4494effc531f62f144da39d3b86f4823f674 100644
--- a/content/test/browser_test_message_pump_android.h
+++ b/content/test/browser_test_message_pump_android.h
@@ -5,6 +5,7 @@
 #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"
 
@@ -12,9 +13,6 @@ 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();
@@ -24,6 +22,9 @@ class BrowserTestMessagePumpAndroid : public base::MessagePumpForUI {
   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();