WebKit clean required by move of V8 to external/v8.

Change-Id: Idc425e143c928a7da39af9a002705699e3e12901
diff --git a/cleanspec.mk b/cleanspec.mk
index 27214a6..7cf24de 100644
--- a/cleanspec.mk
+++ b/cleanspec.mk
@@ -105,6 +105,9 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES/openssl_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libwebcore_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libwebcore_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libv8_intermediates)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST