Update some flaky GMs to see if they stick.

expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 7321 matching lines @@
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }, 
     "dftext_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          17285100910198162540
+          8724457852621974680
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "dftext_msaa16.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          17285100910198162540
+          8724457852621974680
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "dftext_nvprmsaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           7423129583958868428
         ]
@@ skipping 8188 matching lines @@
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }, 
     "pathfill_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          17309534002420287654
+          4209509132264177262
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "pathfill_msaa16.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           4498024042829372500
         ]
@@ skipping 5402 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11835374726311942978
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }