Add text blob gm baselines.

expectations/gm/Test-Android-Nexus4-Adreno320-Arm7-Debug/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           16998423976396106083
         ]
       ], 
       "bugs": [
@@ skipping 8831 matching lines @@
         [
           "bitmap-64bitMD5", 
           1221372586972395156
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }, 
+    "textblob_565.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          12435712145508145050
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "textblob_8888.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          17055632020623913046
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "textblob_gpu.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          1702179094334861733
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
     "texteffects_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11311445240364221126
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "texteffects_8888.png": {
@@ skipping 696 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           16748320297859630449
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }