Fix host java doc by referring to the correct classpath.

In droiddoc for host, we don't generate classes.jar for
LOCAL_JAVA_LIBRARIES. Switch to refer to the installed jar file instead.
This is consistent with how LOCAL_JAVA_LIBRARIES for host is handled in
base_rules.mk.

Bug: 9176318
Change-Id: If7460b30ca5da28743487d66da0029a44108d556
diff --git a/core/droiddoc.mk b/core/droiddoc.mk
index 90ef0b3..ecfe3dc 100644
--- a/core/droiddoc.mk
+++ b/core/droiddoc.mk
@@ -53,6 +53,10 @@
 
 ifeq ($(LOCAL_IS_HOST_MODULE),true)
 $(full_target): PRIVATE_BOOTCLASSPATH :=
+full_java_libs := $(addprefix $(HOST_OUT_JAVA_LIBRARIES)/,\
+  $(addsuffix $(COMMON_JAVA_PACKAGE_SUFFIX),$(LOCAL_JAVA_LIBRARIES)))
+full_java_lib_deps := $(full_java_libs)
+
 else
 
 ifneq ($(LOCAL_SDK_VERSION),)
@@ -70,11 +74,10 @@
 endif  # LOCAL_SDK_VERSION
 LOCAL_JAVA_LIBRARIES := $(sort $(LOCAL_JAVA_LIBRARIES))
 
+full_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES)) $(LOCAL_CLASSPATH)
+full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES)) $(LOCAL_CLASSPATH)
 endif # !LOCAL_IS_HOST_MODULE
 
-full_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE)) $(LOCAL_CLASSPATH)
-full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE)) $(LOCAL_CLASSPATH)
-
 $(full_target): PRIVATE_CLASSPATH := $(subst $(space),:,$(full_java_libs))