Only show the host portion of the url in the title bar.

For security reasons, we want to ensure that the domain
name of the current page is being shown in the title bar.
Use BrowserActivity's method of building the url for the
title bar, which also shows https if it is a secure site.
diff --git a/src/com/android/browser/TitleBar.java b/src/com/android/browser/TitleBar.java
index f43058b..fdcab3c 100644
--- a/src/com/android/browser/TitleBar.java
+++ b/src/com/android/browser/TitleBar.java
@@ -137,7 +137,7 @@
         } else {
             mTitle.setText(title);
         }
-        mUrl.setText(url);
+        mUrl.setText(BrowserActivity.buildTitleUrl(url.toString()));
     }
 
     /* package */ void setToTabPicker() {