Remove reflection now we are building against L

Remove reflection and update changed renamed L APIs
now that branch has L sdk.

Change-Id: I223c6528487110eb328e2e229bbcbefb701e0c20
diff --git a/Android.mk b/Android.mk
index dbce33f..6e8365f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -36,7 +36,8 @@
 LOCAL_PROTOC_OPTIMIZE_TYPE := nano
 LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/protos/
 
-LOCAL_SDK_VERSION := 19
+# STOPSHIP(kennyguy): change to 21 once the L SDK is baked.
+LOCAL_SDK_VERSION := current
 
 LOCAL_PACKAGE_NAME := Launcher3
 #LOCAL_CERTIFICATE := shared