Build and install dh-chromeos before doing anything else

src/scripts/build_platform_packages.sh

Index: src/scripts/build_platform_packages.sh
diff --git a/src/scripts/build_platform_packages.sh b/src/scripts/build_platform_packages.sh
index 0f30ff1686fa32bbe7f104b21cc654a1e23be54f..93ce8673e407707e5c576da920b4bf3478af62c5 100755
--- a/src/scripts/build_platform_packages.sh
+++ b/src/scripts/build_platform_packages.sh
@@ -26,7 +26,7 @@ NUM_JOBS=`grep -c "^processor" /proc/cpuinfo`
 
 PLATFORM_DIR="$SRC_ROOT/platform"
 
-PLATFORM_DIRS="acpi assets dh-chromeos fake_hal init installer login_manager \
+PLATFORM_DIRS="acpi assets fake_hal init installer login_manager \
                memento_softwareupdate pam_google window_manager \
                cros chrome screenlocker cryptohome \
                monitor_reconfig microbenchmark minijail metrics_collection \
@@ -46,6 +46,12 @@ then
   export GET_STABLE_CHROME=1
 fi
 
+# Build dh-chromeos really first. Some of third_party needs it.
+echo "Building package dh-chromeos..."
+cd "$PLATFORM_DIR/dh-chromeos"
+./make_pkg.sh
+cd -
+
 # Build third_party packages first, since packages and libs depend on them.
 for i in $THIRD_PARTY_PACKAGES
 do