Rebaseline win7-HD2000 for flaky dashing4 gm

expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           9785004568147979273
         ]
       ], 
       "bugs": [
@@ skipping 4373 matching lines @@
           "bitmap-64bitMD5", 
           11914932505048875197
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "dashing4_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14358683502979084679
+          11931681754311283166
         ]
       ], 
       "bugs": [
         2667
       ], 
       "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "dashing_565.png": {
       "allowed-digests": [
@@ skipping 8329 matching lines @@
           15843716056234692659
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }
   }
 }