Add a flag to enable instrumentation of the framework classes.

Bug: 29777843
Change-Id: I0f3639ad1303a9b2cc612f99cde427dedff4874f
diff --git a/Android.mk b/Android.mk
index c2d3987..dec667e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -495,6 +495,10 @@
 
 LOCAL_RMTYPEDEFS := true
 
+ifeq ($(EMMA_INSTRUMENT_FRAMEWORK),true)
+LOCAL_EMMA_INSTRUMENT := true
+endif
+
 include $(BUILD_JAVA_LIBRARY)
 framework_module := $(LOCAL_INSTALLED_MODULE)