Target current SDK.

A hardcoded targetSdkVersion of 23 was unnecessarily set. Also moved to
use a non-deprecated WebViewClient method.

Bug: 115868105
Test: manual
Change-Id: I623bc3618142420a61e61aa9ed8d304ec8ab3573
(cherry picked from commit 3d37ca33c2604c29cdd0841c5a6fee2dfea80a6a)
2 files changed