Enable Address Sanitizer for native host test 2nd try

This CL enables Address Sanitizer for native host test. Note that
production build is not affected with this change.  ASan is enabled
only in static lib for test executables.

Change-Id: I2c8e99b8c55e611e86f74579f24a63ac949bb02d
diff --git a/native/jni/HostUnitTests.mk b/native/jni/HostUnitTests.mk
index 40ec255..e30d50a 100644
--- a/native/jni/HostUnitTests.mk
+++ b/native/jni/HostUnitTests.mk
@@ -29,8 +29,10 @@
 #################### Host library for unit test
 # TODO: Remove -std=c++11 once it is set by default on host build.
 LATIN_IME_SRC_DIR := src
+LOCAL_ADDRESS_SANITIZER := true
 LOCAL_CFLAGS += -std=c++11 -Wno-unused-parameter -Wno-unused-function
 LOCAL_CLANG := true
+LOCAL_CXX_STL := libc++
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(LATIN_IME_SRC_DIR)
 LOCAL_MODULE := liblatinime_host_static_for_unittests
 LOCAL_MODULE_TAGS := optional
@@ -40,9 +42,11 @@
 #################### Host native tests
 include $(CLEAR_VARS)
 LATIN_IME_TEST_SRC_DIR := tests
+LOCAL_ADDRESS_SANITIZER := true
 # TODO: Remove -std=c++11 once it is set by default on host build.
 LOCAL_CFLAGS += -std=c++11 -Wno-unused-parameter -Wno-unused-function
 LOCAL_CLANG := true
+LOCAL_CXX_STL := libc++
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(LATIN_IME_SRC_DIR)
 LOCAL_MODULE := liblatinime_host_unittests
 LOCAL_MODULE_TAGS := tests