File util, generic crypto, and key query

This CL merges several CLs from the widevine repo:

http://go/wvgerrit/18012 Add support for querying allowed usage for key.
http://go/wvgerrit/17971 Add per-origin storage.
http://go/wvgerrit/18152 Add OEMCrypto's generic crypto operations to CDM.
http://go/wvgerrit/17911 QueryKeyControlInfo => QueryOemCryptoSessionId

Note: numbering in wv_cdm_types.h was added in this CL and will be
back ported to wvgerrit in a future CL.

Change-Id: Idb9e9a67e94f62f25dc16c5307f75a08b3430b64

libwvdrmengine/Android.mk

@@ -13,6 +13,8 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := libcdm_utils
 LOCAL_MODULE_CLASS := STATIC_LIBRARIES
 
+LOCAL_STATIC_LIBRARIES := libcrypto_static
+
 LOCAL_C_INCLUDES := \
     vendor/widevine/libwvdrmengine/cdm/core/include \
     vendor/widevine/libwvdrmengine/cdm/include \
@@ -28,6 +30,7 @@ LOCAL_SRC_FILES := \
     $(CORE_SRC_DIR)/string_conversions.cpp \
     $(SRC_DIR)/clock.cpp \
     $(SRC_DIR)/file_store.cpp \
+    $(SRC_DIR)/file_utils.cpp \
     $(SRC_DIR)/lock.cpp \
     $(SRC_DIR)/log.cpp \
     $(SRC_DIR)/properties_android.cpp \