add expectations for Test-Android-Reference-Unknown-Arm64-{Debug,Release}

BUG=skia:2828
NOTREECHECKS=true
NOTRY=true
R=mtklein@google.com
TBR=mtklein

Author: epoger@google.com

Review URL: https://codereview.chromium.org/468243002
diff --git a/expectations/gm/Test-Android-Reference-Unknown-Arm64-Debug/expected-results.json b/expectations/gm/Test-Android-Reference-Unknown-Arm64-Debug/expected-results.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/expectations/gm/Test-Android-Reference-Unknown-Arm64-Debug/expected-results.json
@@ -0,0 +1 @@
+{}
diff --git a/expectations/gm/Test-Android-Reference-Unknown-Arm64-Release/expected-results.json b/expectations/gm/Test-Android-Reference-Unknown-Arm64-Release/expected-results.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/expectations/gm/Test-Android-Reference-Unknown-Arm64-Release/expected-results.json
@@ -0,0 +1 @@
+{}