Replace DEX_FLAGS by flags for D8 and R8.

Bug: b/227746536
Test: manual
Change-Id: Ic3cb8feb7a09d690ecd309162236e49a8d1e52c6
diff --git a/core/definitions.mk b/core/definitions.mk
index a3f12e7..8fe5edb 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2609,7 +2609,7 @@
 @mkdir -p $(dir $@)tmp
 $(hide) rm -f $(dir $@)classes*.dex $(dir $@)d8_input.jar
 $(hide) $(ZIP2ZIP) -j -i $< -o $(dir $@)d8_input.jar "**/*.class"
-$(hide) $(D8_WRAPPER) $(DX_COMMAND) $(D8_FLAGS) \
+$(hide) $(D8_WRAPPER) $(D8_COMMAND) \
     --output $(dir $@)tmp \
     $(addprefix --lib ,$(PRIVATE_D8_LIBS)) \
     --min-api $(PRIVATE_MIN_SDK_VERSION) \
@@ -3213,7 +3213,7 @@
 define transform-jar-to-dex-r8
 @echo R8: $@
 $(hide) rm -f $(PRIVATE_PROGUARD_DICTIONARY)
-$(hide) $(R8_WRAPPER) $(R8_COMPAT_PROGUARD) $(R8_FLAGS) \
+$(hide) $(R8_WRAPPER) $(R8_COMMAND) \
     -injars '$<' \
     --min-api $(PRIVATE_MIN_SDK_VERSION) \
     --no-data-resources \