Update installer files now that PDF plugin is gone.

chrome/installer/linux/common/installer.include

 # Recursively replace @@include@@ template variables with the referenced file,
 # and write the resulting text to stdout.
 process_template_includes() {
   INCSTACK+="$1->"
   # Includes are relative to the file that does the include.
   INCDIR=$(dirname $1)
   # Clear IFS so 'read' doesn't trim whitespace
   local OLDIFS="$IFS"
   IFS=''
   while read -r LINE
@@ skipping 154 matching lines @@
 
   # Pepper Flash.
   PEPPERFLASH_SRCDIR="${BUILDDIR}/PepperFlash"
   PEPPERFLASH_DESTDIR="${STAGEDIR}/${INSTALLDIR}/PepperFlash"
   install -m 755 -d "${PEPPERFLASH_DESTDIR}"
   install -m 644 -s "${PEPPERFLASH_SRCDIR}/libpepflashplayer.so" \
     "${PEPPERFLASH_DESTDIR}/"
   install -m 644 "${PEPPERFLASH_SRCDIR}/manifest.json" \
     "${PEPPERFLASH_DESTDIR}/"
 
-  # pdf plugin
-  if [ -f "${BUILDDIR}/libpdf.so" ]; then
-    install -m 644 -s "${BUILDDIR}/libpdf.so" "${STAGEDIR}/${INSTALLDIR}/"
-  fi
-
   # peerconnection shared library
   if [ -f "${BUILDDIR}/lib/libpeerconnection.so" ]; then
     install -m 755 -d "${STAGEDIR}/${INSTALLDIR}/lib/"
 
     install -m 644 -s "${BUILDDIR}/lib/libpeerconnection.so" "${STAGEDIR}/${INSTALLDIR}/lib/"
   fi
 
   # libc++
   if [ -f "${BUILDDIR}/lib/libc++.so" ]; then
     install -m 755 -d "${STAGEDIR}/${INSTALLDIR}/lib/"
@@ skipping 61 matching lines @@
     "${STAGEDIR}/usr/share/gnome-control-center/default-apps/${PACKAGE}.xml"
   chmod 644 "${STAGEDIR}/usr/share/gnome-control-center/default-apps/${PACKAGE}.xml"
   process_template "${BUILDDIR}/installer/common/default-app-block.template" \
     "${STAGEDIR}${INSTALLDIR}/default-app-block"
   chmod 644 "${STAGEDIR}${INSTALLDIR}/default-app-block"
 
   # documentation
   install -m 755 "${BUILDDIR}/${PROGNAME}.1" \
     "${STAGEDIR}/usr/share/man/man1/${PACKAGE}.1"
 }