Fix Memory leaks on Browser application

Working on Issue 31125 (http://code.google.com/p/android/issues
/detail?id=31125):
* Enhance mTabViews management on NavScreen class (add remove()
function when necessary).

Change-Id: I89662880107ae88ead40d5246286d4ab65ed9e75
Signed-off-by: Sebastien MICHEL <sebastien.michel@intel.com>
Merge tag 'android-4.4.3_r1.1'

Android 4.4.3 release 1.1

Change-Id: Ica4eb0253012d3a372257fb24cd356f7aff8be18