Adding Angular and dependent packages for testing

third_party/pkg/update_di.sh

Index: third_party/pkg/update_di.sh
diff --git a/third_party/pkg/update_di.sh b/third_party/pkg/update_di.sh
index 2dd72bd2d1624a3c305cbe397ee769cad6319507..dd0fe9cefc699414d0fb7ef5bc152e22de6206b9 100755
--- a/third_party/pkg/update_di.sh
+++ b/third_party/pkg/update_di.sh
@@ -6,7 +6,7 @@
 # bail on error
 set -e
 
-DIR=$( cd $( dirname "${BASH_SOURCE[0]}" ) && pwd )
+readonly DIR=$( cd $( dirname "${BASH_SOURCE[0]}" ) && pwd )
 echo $DIR
 pushd $DIR > /dev/null
 
@@ -17,12 +17,12 @@ echo "*** Syncing code"
 git clone https://github.com/angular/di.dart di
 
 pushd di
-REVISION=`git rev-parse HEAD`
+readonly REVISION=`git rev-parse HEAD`
 rm -rf .git
 
 echo "*** Generating static injector test files"
 pub install
-DART_SDK=../../../out/ReleaseIA32/dart-sdk
+readonly DART_SDK=../../../out/ReleaseIA32/dart-sdk
 $DART_SDK/bin/dart \
     --package-root=$DART_SDK/../packages/ \
     bin/generator.dart \
@@ -35,4 +35,5 @@ $DART_SDK/bin/dart \
 echo "*** Cleaning up packages"
 rm -rf packages
 
+echo "${REVISION}" >> REVISION
 echo "*** Updated to revision $REVISION"