Revert "Upgrade the Development app to 1.8, and use a lambda."

This reverts commit 17f05f5820.

Change-Id: Idc8259a5a2fd209c19a6f548ddf8b1a09ed33966

apps/Development/Android.mk

@@ -11,6 +11,4 @@ LOCAL_SRC_FILES := $(call all-subdir-java-files) \
 LOCAL_PACKAGE_NAME := Development
 LOCAL_CERTIFICATE := platform
 
-LOCAL_JAVA_LANGUAGE_VERSION := 1.8
-
 include $(BUILD_PACKAGE)

apps/Development/src/com/android/development/Connectivity.java

@@ -334,7 +334,16 @@ public class Connectivity extends Activity {
                     public void onAvailable(Network network) {
                         mNetwork = network;
                         onHttpRequestResults(null);
-                        runOnUiThread(() -> findViewById(mProgressBar).setVisibility(View.GONE));
+// TODO: replace with:
+//                      runOnUiThread(() -> {
+//                            findViewById(mProgressBar).setVisibility(View.GONE);
+//                      });
+                        runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                findViewById(mProgressBar).setVisibility(View.GONE);
+                            }
+                        });
                     }
                     @Override
                     public void onLost(Network network) {