chore(ddc): make DDC build non-experimental

scripts/ci/build_and_test.sh

@@ -8,7 +8,7 @@ echo ===========================================================================
 SCRIPT_DIR=$(dirname $0)
 cd $SCRIPT_DIR/../..
 
-if [ "$MODE" = "dart_experimental" ]; then
+if [ "$MODE" = "dart_ddc" ]; then
   ${SCRIPT_DIR}/build_$MODE.sh
 elif [[ $MODE = saucelabs* ]] ; then
   ${SCRIPT_DIR}/test_saucelabs.sh $MODE

scripts/ci/build_dart_ddc.sh

@@ -2,7 +2,7 @@
 set -ex
 
 echo =============================================================================
-echo EXPERIMENTAL DART BUILD
+echo "DART DEV COMPILER (DDC) BUILD"
 echo =============================================================================
 
 # go to project dir
@@ -28,7 +28,7 @@ git clone https://github.com/dart-lang/dev_compiler.git tmp/dev_compiler
 ./node_modules/.bin/gulp build/packages.dart
 ./node_modules/.bin/gulp build.dart.material.css
 ./node_modules/.bin/gulp build/pubspec.dart
-node ./scripts/ci/dart_experimental/pubspec_for_ddc.js \
+node ./scripts/ci/dart_ddc/pubspec_for_ddc.js \
     --pubspec-file=dist/dart/playground/pubspec.yaml
 
 # Compile playground