disable zoom buttons

Change-Id: I6b99b74bb1930c6a66903bd4894f51f3aaf33e89
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 06e0710..9f1f3ba 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -228,6 +228,8 @@
             ActionBar actionBar = getActionBar();
             mTabBar = new TabBar(this, mTabControl, (TitleBarXLarge) mFakeTitleBar);
             actionBar.setCustomNavigationMode(mTabBar);
+            // disable built in zoom controls
+            mTabControl.setDisplayZoomControls(false);
         } else {
             mTitleBar = new TitleBar(this);
             // mTitleBar will be always be shown in the fully loaded mode on