Use Standard Errors in DrmPlugin

Now that MediaErrors.h has errors for some of the conditions we were using
custom error codes for previously, we should switch to using the standard
error codes in order to get better error reporting to the app.

Bug: 8621516

This is a merge of https://widevine-internal-review.googlesource.com/#/c/5040/
from widevine cdm repo to android repo.

Change-Id: I111a8825fa8fd8186a0d535cf19a7b08d9f35aee

libwvdrmengine/include/WVErrors.h

@@ -13,13 +13,11 @@ using android::ERROR_DRM_VENDOR_MIN;
 using android::ERROR_DRM_VENDOR_MAX;
 
 enum {
-  kErrorNeedProvisioning        = ERROR_DRM_VENDOR_MIN,
-  kErrorDeviceRevoked           = ERROR_DRM_VENDOR_MIN + 1,
-  kErrorIncorrectBufferSize     = ERROR_DRM_VENDOR_MIN + 2,
-  kErrorCDMGeneric              = ERROR_DRM_VENDOR_MIN + 3,
-  kErrorUnsupportedCrypto       = ERROR_DRM_VENDOR_MIN + 4,
-  kErrorCannotGuaranteeSecurity = ERROR_DRM_VENDOR_MIN + 5,
-  kErrorExpectedUnencrypted     = ERROR_DRM_VENDOR_MIN + 6,
+  kErrorIncorrectBufferSize     = ERROR_DRM_VENDOR_MIN,
+  kErrorCDMGeneric              = ERROR_DRM_VENDOR_MIN + 1,
+  kErrorUnsupportedCrypto       = ERROR_DRM_VENDOR_MIN + 2,
+  kErrorCannotGuaranteeSecurity = ERROR_DRM_VENDOR_MIN + 3,
+  kErrorExpectedUnencrypted     = ERROR_DRM_VENDOR_MIN + 4,
 
   // Used by crypto test mode
   kErrorTestMode                = ERROR_DRM_VENDOR_MAX,

libwvdrmengine/include/mapErrors-inl.h

@@ -24,9 +24,9 @@ static android::status_t mapCdmResponseType(wvcdm::CdmResponseType res) {
     case wvcdm::NEED_KEY:
       return android::ERROR_DRM_NO_LICENSE;
     case wvcdm::NEED_PROVISIONING:
-      return kErrorNeedProvisioning;
+      return android::ERROR_DRM_NOT_PROVISIONED;
     case wvcdm::DEVICE_REVOKED:
-      return kErrorDeviceRevoked;
+      return android::ERROR_DRM_DEVICE_REVOKED;
     case wvcdm::KEY_ERROR:
       // KEY_ERROR is used by the CDM to mean just about any kind of error, not
       // just license errors, so it is mapped to the generic response.