add a couple missing build deps

.SRCINFO

@@ -1,5 +1,5 @@
 # Generated by mksrcinfo v8
-# Mon Dec 19 08:13:46 UTC 2016
+# Wed Dec 21 22:05:53 UTC 2016
 pkgbase = ungoogled-chromium
 	pkgdesc = Modifications to Google Chromium for removing Google integration and enhancing privacy, control, and transparency
 	pkgver = 55.0.2883.95
@@ -15,6 +15,8 @@ pkgbase = ungoogled-chromium
 	makedepends = mesa
 	makedepends = ninja
 	makedepends = git
+	makedepends = quilt
+	makedepends = clang
 	depends = gtk2
 	depends = nss
 	depends = alsa-lib

PKGBUILD

@@ -18,7 +18,7 @@ optdepends=('kdebase-kdialog: needed for file dialogs in KDE'
             'gnome-keyring: for storing passwords in GNOME keyring'
             'kdeutils-kwalletmanager: for storing passwords in KWallet'
             'pepper-flash: for Pepper Flash plugin [AUR]')
-makedepends=('python3' 'python2' 'gperf' 'yasm' 'mesa' 'ninja' 'git')
+makedepends=('python3' 'python2' 'gperf' 'yasm' 'mesa' 'ninja' 'git' 'quilt' 'clang')
 provides=('chromium')
 install=${pkgname}.install
 source=("git://github.com/Eloston/ungoogled-chromium"