When long pressing on title bar, do not use WebView in onCreateContextMenu

Fix for http://b/issue?id=2456405

Override TitleBar::createContextMenu to call BrowserActivity's onCreateContextMenu
directly, so that WebView is ignored, and we only get the options for TitleBar.
diff --git a/src/com/android/browser/TitleBar.java b/src/com/android/browser/TitleBar.java
index 15b1d44..98667c3 100644
--- a/src/com/android/browser/TitleBar.java
+++ b/src/com/android/browser/TitleBar.java
@@ -141,9 +141,10 @@
     };
 
     @Override
-    protected void onCreateContextMenu(ContextMenu menu) {
+    public void createContextMenu(ContextMenu menu) {
         MenuInflater inflater = mBrowserActivity.getMenuInflater();
         inflater.inflate(R.menu.title_context, menu);
+        mBrowserActivity.onCreateContextMenu(menu, this, null);
     }
 
     @Override