diff --git a/embedding/android/GeckoEvent.java b/embedding/android/GeckoEvent.java
index 8940ecce7765..c3f4e892b517 100644
--- a/embedding/android/GeckoEvent.java
+++ b/embedding/android/GeckoEvent.java
@@ -334,9 +334,4 @@ public class GeckoEvent {
         mBandwidth = bandwidth;
         mCanBeMetered = canBeMetered;
     }
-
-    public void doCallback(String json) {
-        // this stub is never called in XUL Fennec, but we need it so that the JNI code
-        // shared between XUL and Native Fennec doesn't die.
-    }
 }
diff --git a/mobile/android/base/GeckoEvent.java b/mobile/android/base/GeckoEvent.java
index 65a40340b06c..765c3081f42e 100644
--- a/mobile/android/base/GeckoEvent.java
+++ b/mobile/android/base/GeckoEvent.java
@@ -63,10 +63,6 @@ import android.util.Log;
  */
 
 public class GeckoEvent {
-    public interface Callback {
-        public void callback(GeckoEvent event, String jsonData);
-    }
-
     private static final String LOGTAG = "GeckoEvent";
 
     private static final int INVALID = -1;
@@ -142,8 +138,6 @@ public class GeckoEvent {
 
     public int mNativeWindow;
 
-    Callback mCallback;
-
     private GeckoEvent(int evType) {
         mType = evType;
     }
@@ -422,10 +416,4 @@ public class GeckoEvent {
         event.mMetaState = tabId;
         return event;
     }
-
-    public void doCallback(String jsonData) {
-        if (mCallback != null) {
-            mCallback.callback(this, jsonData);
-        }
-    }
 }
diff --git a/widget/android/AndroidJavaWrappers.cpp b/widget/android/AndroidJavaWrappers.cpp
index 90fed9715d92..528b55cee85f 100644
--- a/widget/android/AndroidJavaWrappers.cpp
+++ b/widget/android/AndroidJavaWrappers.cpp
@@ -76,7 +76,6 @@ jfieldID AndroidGeckoEvent::jLocationField = 0;
 jfieldID AndroidGeckoEvent::jAddressField = 0;
 jfieldID AndroidGeckoEvent::jBandwidthField = 0;
 jfieldID AndroidGeckoEvent::jCanBeMeteredField = 0;
-jmethodID AndroidGeckoEvent::jDoCallbackMethod = 0;
 
 jclass AndroidPoint::jPointClass = 0;
 jfieldID AndroidPoint::jXField = 0;
@@ -208,8 +207,6 @@ AndroidGeckoEvent::InitGeckoEventClass(JNIEnv *jEnv)
     jAddressField = getField("mAddress", "Landroid/location/Address;");
     jBandwidthField = getField("mBandwidth", "D");
     jCanBeMeteredField = getField("mCanBeMetered", "Z");
-
-    jDoCallbackMethod = getMethod("doCallback", "(Ljava/lang/String;)V");
 }
 
 void
@@ -488,16 +485,6 @@ AndroidGeckoEvent::Init(int aType, nsIntRect const& aRect)
     mRect = aRect;
 }
 
-AndroidGeckoEvent::~AndroidGeckoEvent() {
-    if (!wrapped_obj)
-        return;
-
-    JNIEnv *jenv = GetJNIForThread();
-    if (!jenv)
-        return;
-    jenv->DeleteGlobalRef(wrapped_obj);
-}
-
 void
 AndroidGeckoEvent::Init(JNIEnv *jenv, jobject jobj)
 {
@@ -508,8 +495,6 @@ AndroidGeckoEvent::Init(JNIEnv *jenv, jobject jobj)
     if (!jobj)
         return;
 
-    jenv->NewGlobalRef(jobj);
-
     mAction = jenv->GetIntField(jobj, jActionField);
     mType = jenv->GetIntField(jobj, jTypeField);
 
@@ -670,15 +655,6 @@ AndroidPoint::Init(JNIEnv *jenv, jobject jobj)
     }
 }
 
-void
-AndroidGeckoEvent::DoCallback(const nsAString& data) {
-    JNIEnv* env = AndroidBridge::GetJNIEnv();
-    if (!env)
-        return;
-    jstring jData = env->NewString(nsPromiseFlatString(data).get(), data.Length());
-    env->CallVoidMethod(wrapped_obj, jDoCallbackMethod, jData);
-}
-
 void
 AndroidGeckoLayerClient::Init(jobject jobj)
 {
diff --git a/widget/android/AndroidJavaWrappers.h b/widget/android/AndroidJavaWrappers.h
index d9a9ce96e02b..690217c2b61b 100644
--- a/widget/android/AndroidJavaWrappers.h
+++ b/widget/android/AndroidJavaWrappers.h
@@ -495,8 +495,6 @@ public:
         Init(aResizeEvent);
     }
 
-    ~AndroidGeckoEvent();
-
     void Init(JNIEnv *jenv, jobject jobj);
     void Init(int aType);
     void Init(int x1, int y1, int x2, int y2);
@@ -536,7 +534,6 @@ public:
     nsGeoPositionAddress* GeoAddress() { return mGeoAddress; }
     double Bandwidth() { return mBandwidth; }
     bool CanBeMetered() { return mCanBeMetered; }
-    void DoCallback(const nsAString& data);
 
 protected:
     int mAction;
@@ -616,8 +613,6 @@ protected:
 
     static jfieldID jBandwidthField;
     static jfieldID jCanBeMeteredField;
-    
-    static jmethodID jDoCallbackMethod;
 
 public:
     enum {