browser: properly handle get center tab

Change-Id: Ibec6a7b80e399b99fe2e6df64a7c4b1cc6c38728
JIRA: CYAN-3235
Issue: https://jira.cyanogenmod.org/browse/CYAN-3235
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "browser: properly handle get center tab" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_apps_Browser into cm-11.0