Linux: Add libcups2(-dev) to install-build-deps.sh.

build/install-build-deps.sh

Index: build/install-build-deps.sh
===================================================================
--- build/install-build-deps.sh	(revision 86167)
+++ build/install-build-deps.sh	(working copy)
@@ -152,7 +152,7 @@
 
 # Packages need for development
 dev_list="apache2.2-bin bison fakeroot flex g++ gperf libapache2-mod-php5
-          libasound2-dev libbz2-dev libcairo2-dev
+          libasound2-dev libbz2-dev libcairo2-dev libcups2-dev
           libdbus-glib-1-dev libgconf2-dev
           libgl1-mesa-dev libglu1-mesa-dev libglib2.0-dev libgnome-keyring-dev
           libgtk2.0-dev libjpeg62-dev libnspr4-dev libnss3-dev libpam0g-dev
@@ -167,9 +167,9 @@
 chromeos_lib_list="libpulse0 libbz2-1.0 libcurl4-gnutls-dev"
 
 # Full list of required run-time libraries
-lib_list="libatk1.0-0 libc6 libasound2 libcairo2 libdbus-glib-1-2 libexpat1
-          libfontconfig1 libfreetype6 libglib2.0-0 libgnome-keyring0 libgtk2.0-0
-          libpam0g libpango1.0-0 libpcre3 libpixman-1-0
+lib_list="libatk1.0-0 libc6 libasound2 libcairo2 libcups2 libdbus-glib-1-2
+          libexpat1 libfontconfig1 libfreetype6 libglib2.0-0 libgnome-keyring0
+          libgtk2.0-0 libpam0g libpango1.0-0 libpcre3 libpixman-1-0
           libpng12-0 libstdc++6 libsqlite3-0 libx11-6 libxau6 libxcb1
           libxcomposite1 libxcursor1 libxdamage1 libxdmcp6 libxext6 libxfixes3
           libxi6 libxinerama1 libxrandr2 libxrender1 libxtst6 zlib1g