Add text blob gm baselines.

Review URL: https://codereview.chromium.org/504203002
diff --git a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86_64-Debug/expected-results.json b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86_64-Debug/expected-results.json
index 5560767..bad11e8 100644
--- a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86_64-Debug/expected-results.json
+++ b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86_64-Debug/expected-results.json
@@ -11795,6 +11795,33 @@
       ], 
       "reviewed-by-human": false
     }, 
+    "textblob_565.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          8578201284082955084
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "textblob_8888.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          6848497618937600819
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "textblob_gpu.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          8450106420219141611
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
     "texteffects_565.png": {
       "allowed-digests": [
         [