libdrm-dev is now a required package on GCE instances

compute_engine_scripts/chromecompute/vm_setup_utils.sh

 #!/bin/bash
 #
 # Utility functions for the GCE chromecompute setup scripts.
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 # Author: rmistry@google.com (Ravi Mistry)
 
 
 function install_packages {
   echo
   echo "Install Required packages"
   $GCOMPUTE_CMD ssh --ssh_user=$PROJECT_USER $INSTANCE_NAME \
     "sudo dpkg --add-architecture i386 && sudo apt-get update && " \
     "sudo apt-get -y install haveged python-django openjdk-7-jre-headless zlib1g-dev:i386 libgif-dev:i386 libpng12-dev:i386 fontconfig:i386 libgl1-mesa-dev:i386 libglu1-mesa-dev:i386 ccache g++-multilib libpoppler-cpp-dev libpoppler-cpp0:i386 && " \
     "sudo cp /usr/lib/i386-linux-gnu/libpng.so /usr/lib32/ && " \
     "sudo cp /usr/lib/i386-linux-gnu/libpng12.so.0 /usr/lib32/ && " \
-    "sudo apt-get -y install libpng12-dev libgtk2.0-dev ant clang-3.4 openjdk-7-jdk realpath libqt4-dev-bin libqt4-core libqt4-gui libqt4-dev:i386 icewm && " \
+    "sudo apt-get -y install libpng12-dev libgtk2.0-dev ant clang-3.4 openjdk-7-jdk realpath libqt4-dev-bin libqt4-core libqt4-gui libqt4-dev:i386 icewm libdrm-dev && " \
     "sudo apt-get -y remove python-zope.interface && " \
     "sudo easy_install zope.interface" \
     || FAILED="$FAILED InstallPackages"
   echo
 }
 
 function setup_symlinks {
   echo
   echo "Setup Symlinks"
   $GCOMPUTE_CMD ssh --ssh_user=$PROJECT_USER $INSTANCE_NAME \
@@ skipping 117 matching lines @@
 }
 
 function reboot {
   echo
   echo "===== Rebooting the instance ======"
   $GCOMPUTE_CMD ssh --ssh_user=$PROJECT_USER $INSTANCE_NAME \
     "sudo reboot" \
     || FAILED="$FAILED Reboot"
   echo
 }