Add expectations for dashing gm

expectations/gm/Test-Android-Xoom-Tegra2-Arm7-Debug/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 3178 matching lines @@
     }, 
     "dashing3_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11226548876522986429
         ]
       ], 
       "reviewed-by-human": true
     }, 
+    "dashing4_565.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          8454109889032154845
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "dashing4_8888.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          10873004693785991483
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
+    "dashing4_gpu.png": {
+      "allowed-digests": [
+        [
+          "bitmap-64bitMD5", 
+          17285473086169387913
+        ]
+      ], 
+      "reviewed-by-human": true
+    }, 
     "dashing_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2587070015488181148
         ]
       ], 
       "bugs": [
         1759
       ], 
@@ skipping 5551 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12025936981544886506
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }