Add LOCAL_SRCJARS support

Allow java modules to take jars containing .java files as an input.
For turbine, pass them directly to turbine.  For javac, extract them
to a directory and pass a list of the files to javac.

Bug: 73885582
Test: m checkbuild
Change-Id: Ib4351a5b4b165a55e5fb02ee2680466db368983a
diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index 5176f37..47a8b02 100644
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -63,6 +63,7 @@
     $(java_sources) \
     $(java_resource_sources) \
     $(proto_java_sources_file_stamp) \
+    $(LOCAL_SRCJARS) \
     $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 $(java_source_list_file): $(java_sources_deps)
@@ -73,6 +74,9 @@
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES :=
+$(full_classes_compiled_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_LIST_FILE := $(intermediates.COMMON)/srcjar-list
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_INTERMEDIATES_DIR := $(intermediates.COMMON)/srcjars
 $(full_classes_compiled_jar): \
     $(java_source_list_file) \
     $(java_sources_deps) \
@@ -82,6 +86,7 @@
     $(NORMALIZE_PATH) \
     $(ZIPTIME) \
     $(JAR_ARGS) \
+    $(EXTRACT_SRCJARS) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-package)
 	$(remove-timestamps-from-package)