Add cleanspec for media Session apis.

Change-Id: I58b0acda2a91b3afe6febc3bc00e26fbe27dd431
diff --git a/CleanSpec.mk b/CleanSpec.mk
index ffdac4e..c6f6a62 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -189,6 +189,7 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/media/java/android/media/IMedia*)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/view/IMagnificationCallbacks*)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/tv/)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/media/java/android/media/)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST