diff --git a/CleanSpec.mk b/CleanSpec.mk
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+++ b/CleanSpec.mk
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+# Copyright (C) 2012 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list.  These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+#     $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+#     $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list.  E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+$(call add-clean-step, find $(PRODUCT_OUT) -name "*.apk" | xargs rm)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libsurfaceflinger_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libui_intermediates)
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/root/default.prop)
+$(call add-clean-step, rm -f $(TARGET_OUT)/build.prop)
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/system/etc/mixer_paths_lb.xml)
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/system/etc/permissions/android.hardware.camera.xml)
+
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/root/*)
+# Power HAL 1.0
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/vendor/init/android.hardware.power@1.0-service.rc)
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.power@1.0-service)
+# Power HAL HIDL
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/vendor/etc/init/android.hardware.power@1.3-service.pixel-libperfmgr.rc)
+
+# Health storage HAL
+$(call add-clean-step, find $(PRODUCT_OUT) -type f -name "*android.hardware.health.storage@1.0*" -print0 | xargs -0 rm -f)
+
+# Update to USB HAL 1.3
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.usb@1.2-service.slider)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.usb@1.2-service.slider.rc)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/vintf/manifest/android.hardware.usb@1.2-service.slider.xml)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.usb@1.3-service.slider)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.usb@1.3-service.slider.rc)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/vintf/manifest/android.hardware.usb@1.3-service.slider.xml)