Add baselines for dftext GM.

TBR=robertphillips@google.com

Review URL: https://codereview.chromium.org/638683002
diff --git a/expectations/gm/Test-Android-Xoom-Tegra2-Arm7-Debug/expected-results.json b/expectations/gm/Test-Android-Xoom-Tegra2-Arm7-Debug/expected-results.json
index 45b5461..2e23839 100644
--- a/expectations/gm/Test-Android-Xoom-Tegra2-Arm7-Debug/expected-results.json
+++ b/expectations/gm/Test-Android-Xoom-Tegra2-Arm7-Debug/expected-results.json
@@ -3387,6 +3387,15 @@
       "ignore-failure": false, 
       "reviewed-by-human": true
     }, 
+    "dftext_gpu.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          1095761758860550029
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
     "discard_gpu.png": {
       "allowed-digests": [
         [