Package proguard_usage.zip files in jacoco-report-classes-all.jar

The coverage infrastructure will use the proguard_usage.zip files
to filter out classes that were stripped by R8.

Test: forrest
Bug: 170337718
Change-Id: Ia7c07770ff520aaf0a8de213edbe22d6fca5b98a
diff --git a/core/Makefile b/core/Makefile
index 7104334..5960a70 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -4925,7 +4925,7 @@
 JACOCO_REPORT_CLASSES_ALL := $(PRODUCT_OUT)/jacoco-report-classes-all.jar
 $(JACOCO_REPORT_CLASSES_ALL) :
 	@echo "Collecting uninstrumented classes"
-	find $(TARGET_COMMON_OUT_ROOT) $(HOST_COMMON_OUT_ROOT) -name "jacoco-report-classes.jar" 2>/dev/null | sort > $@.list
+	find $(TARGET_COMMON_OUT_ROOT) $(HOST_COMMON_OUT_ROOT) -name "jacoco-report-classes.jar" -o -name "proguard_usage.zip" 2>/dev/null | sort > $@.list
 	$(SOONG_ZIP) -o $@ -L 0 -C $(OUT_DIR) -P out -l $@.list
 
 endif # EMMA_INSTRUMENT=true