Added switch to disable generating cached_patches.dart file (Dartium only).

tools/dom/scripts/go.sh

Index: tools/dom/scripts/go.sh
diff --git a/tools/dom/scripts/go.sh b/tools/dom/scripts/go.sh
index a830a9b7d99efe98c03ee2f8dcdc313a0d05f9bf..99c4e72377a4feff26531041ec331c8ed6f84e19 100755
--- a/tools/dom/scripts/go.sh
+++ b/tools/dom/scripts/go.sh
@@ -20,6 +20,12 @@ set -x
 #
 #   ./go.sh dart2js,htmldartium
 #
+# To re-gen all sdk/lib files (outside of a Dartium enlistment the file
+# 'sdk/lib/js/cached_patches.dart' might not need to be generated).  To run
+# go.sh w/o the patches files used --no-cached-patches switch e.g.,
+#
+#  ./go.sh --no-cached-patches
+#
 # The following gives a picture of the changes due to 'work'
 #
 #   git checkout master               # select client without changes
@@ -33,8 +39,20 @@ ALLSYSTEMS="htmldart2js,htmldartium,_blink"
 SYSTEMS="$ALLSYSTEMS"
 
 if [[ "$1" != "" ]] ; then
-  SYSTEMS="$1"
+  if [[ "$1" =~ ^-- ]]; then
+      ARG_OPTION="$1"
+  else
+      SYSTEMS="$1"
+  fi
+fi
+
+if [[ "$2" != "" ]] ; then
+  if [[ "$2" =~ ^-- ]]; then
+      ARG_OPTION="$2"
+  else
+      SYSTEMS="$2"
+  fi
 fi
 
 reset && \
-./dartdomgenerator.py --systems="$SYSTEMS" --logging=40 --update-dom-metadata --gen-interop
+./dartdomgenerator.py --systems="$SYSTEMS" --logging=40 --update-dom-metadata --gen-interop "$ARG_OPTION"