New baselines for image=surface gm

expectations/gm/Test-Win8-ShuttleA-HD7770-x86_64-Debug/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 8320 matching lines @@
           "bitmap-64bitMD5", 
           2670248603126936222
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "image-surface_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10863862076099772450
+          16611239826695455129
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "image-surface_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12056409635015540104
         ]
@@ skipping 5554 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           10845440994435344847
         ]
       ], 
       "reviewed-by-human": false
     }
   }
 }