--- a/mobile/android/base/java/org/mozilla/gecko/customtabs/CustomTabsActivity.java
+++ b/mobile/android/base/java/org/mozilla/gecko/customtabs/CustomTabsActivity.java
@@ -1,59 +1,67 @@
 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 package org.mozilla.gecko.customtabs;
 
 import android.app.PendingIntent;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.Browser;
 import android.support.annotation.ColorInt;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.support.design.widget.Snackbar;
 import android.support.v4.util.SparseArrayCompat;
 import android.support.v7.app.ActionBar;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.ListView;
 import android.widget.ProgressBar;
 
 import org.mozilla.gecko.ActivityHandlerHelper;
+import org.mozilla.gecko.BrowserApp;
 import org.mozilla.gecko.DoorHangerPopup;
 import org.mozilla.gecko.EventDispatcher;
 import org.mozilla.gecko.GeckoView;
 import org.mozilla.gecko.GeckoViewSettings;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.SnackbarBuilder;
 import org.mozilla.gecko.Telemetry;
 import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.menu.GeckoMenu;
 import org.mozilla.gecko.menu.GeckoMenuInflater;
 import org.mozilla.gecko.mozglue.SafeIntent;
 import org.mozilla.gecko.permissions.Permissions;
+import org.mozilla.gecko.prompts.Prompt;
+import org.mozilla.gecko.prompts.PromptListItem;
 import org.mozilla.gecko.prompts.PromptService;
 import org.mozilla.gecko.util.ActivityUtils;
 import org.mozilla.gecko.util.Clipboard;
 import org.mozilla.gecko.util.ColorUtil;
 import org.mozilla.gecko.util.GeckoBundle;
 import org.mozilla.gecko.util.IntentUtils;
+import org.mozilla.gecko.util.ThreadUtils;
+import org.mozilla.gecko.util.URIUtils;
 import org.mozilla.gecko.widget.GeckoPopupMenu;
 
 import java.util.List;
 
 public class CustomTabsActivity extends AppCompatActivity
                                 implements GeckoMenu.Callback,
                                            GeckoView.ContentListener,
                                            GeckoView.NavigationListener,
@@ -593,10 +601,68 @@ public class CustomTabsActivity extends 
             getSupportActionBar().hide();
         } else {
             getSupportActionBar().show();
         }
     }
 
     @Override
     public void onContextMenu(GeckoView view, int screenX, int screenY,
-                              String uri, String elementSrc) {}
+                              final String uri, final String elementSrc) {
+
+        final String content = uri != null ? uri : elementSrc != null ? elementSrc : "";
+        final Uri validUri = getValidURL(content);
+        if (validUri == null) {
+            return;
+        }
+
+        runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                openInFennec(validUri, CustomTabsActivity.this);
+            }
+        });
+    }
+
+    void openInFennec(final Uri uri, final Context context) {
+        ThreadUtils.assertOnUiThread();
+
+        final Prompt prompt = new Prompt(context, new Prompt.PromptCallback() {
+            @Override
+            public void onPromptFinished(final GeckoBundle result) {
+
+                final int itemId = result.getInt("button", -1);
+
+                if (itemId == -1) {
+                    // this is the error case, we shouldn't have this situation.
+                    return;
+                }
+                Intent intent = new Intent(context, BrowserApp.class);
+                // BrowserApp's onNewIntent will check action so below is required
+                intent.setAction(Intent.ACTION_VIEW);
+                intent.setData(uri);
+                intent.setPackage(context.getPackageName());
+                context.startActivity(intent);
+
+            }
+        });
+
+        final PromptListItem[] items = new PromptListItem[1];
+        items[0] = new PromptListItem(context.getResources().getString(R.string.overlay_share_open_browser_btn_label));
+        prompt.show("", "", items, ListView.CHOICE_MODE_NONE);
+
+    }
+
+    @Nullable
+    Uri getValidURL(@NonNull String urlString) {
+        final Uri uri = Uri.parse(urlString);
+        if (uri == null) {
+            return null;
+        }
+        final String scheme = uri.getScheme();
+        // currently we only support http and https to open in Firefox
+        if (scheme.equals("http") || scheme.equals("https")) {
+            return uri;
+        } else {
+            return null;
+        }
+    }
 }