Implement CFI for JNI.

CFI is necessary for stack unwinding in gdb, lldb, and libunwind.

Change-Id: I37eb7973f99a6975034cf0e699e138c3a9aba10f
diff --git a/build/Android.gtest.mk b/build/Android.gtest.mk
index 10bb90b..62a11c2 100644
--- a/build/Android.gtest.mk
+++ b/build/Android.gtest.mk
@@ -193,6 +193,7 @@
   compiler/driver/compiler_driver_test.cc \
   compiler/elf_writer_test.cc \
   compiler/image_test.cc \
+  compiler/jni/jni_cfi_test.cc \
   compiler/jni/jni_compiler_test.cc \
   compiler/linker/arm64/relative_patcher_arm64_test.cc \
   compiler/linker/arm/relative_patcher_thumb2_test.cc \