[script] Update build_all_plugins_app to exclude some plugins in master. (flutter#3432)

Author: ditman

script/build_all_plugins_app.sh

@@ -56,6 +56,10 @@ ALL_EXCLUDED=($EXCLUDED)
 if [ "$CHANNEL" == "stable" ]; then
   ALL_EXCLUDED=("$EXCLUDED,$EXCLUDED_PLUGINS_FROM_STABLE")
 fi
+# Exclude non-nnbd plugins from master.
+if [ "$CHANNEL" != "stable" ]; then
+  ALL_EXCLUDED=("$EXCLUDED,$EXCLUDED_PLUGINS_FROM_MASTER")
+fi
 
 echo "Excluding the following plugins: $ALL_EXCLUDED"
 

script/nnbd_plugins.sh

@@ -21,4 +21,22 @@ readonly NNBD_PLUGINS_LIST=(
   "webview_flutter"
 )
 
+# This list contains the list of plugins that have *not* been
+# migrated to nnbd, and conflict with those that have when
+# building the all plugins app. This list should be kept empty.
+
+readonly NON_NNBD_PLUGINS_LIST=(
+  # "android_alarm_manager"
+  "camera"
+  # "file_selector"
+  # "google_maps_flutter"
+  # "image_picker"
+  # "in_app_purchase"
+  # "quick_actions"
+  # "sensors"
+  # "shared_preferences"
+  # "wifi_info_flutter"
+)
+
 export EXCLUDED_PLUGINS_FROM_STABLE=$(IFS=, ; echo "${NNBD_PLUGINS_LIST[*]}")
+export EXCLUDED_PLUGINS_FROM_MASTER=$(IFS=, ; echo "${NON_NNBD_PLUGINS_LIST[*]}")