WebKit clean required by merge with new WebKit version.

Change-Id: I59377d6a0420bfb13b25b4ed7240b47e8aae6114
diff --git a/cleanspec.mk b/cleanspec.mk
index 1387f07..1146ebb 100644
--- a/cleanspec.mk
+++ b/cleanspec.mk
@@ -97,6 +97,8 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libwebcore_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libwebcore_intermediates)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST