Update GM baselines for 8888->4444 fix.

expectations/gm/base-macmini/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "aaclip_gpu.png": {
       "allowed-digests": [
@@ skipping 163 matching lines @@
           "bitmap-64bitMD5", 
           6300477511573821487
         ]
       ], 
       "ignore-failure": false
     }, 
     "bitmapcopy_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3814633597571329417
+          6575867519609045201
         ]
       ], 
       "ignore-failure": false
     }, 
     "bitmapcopy_8888.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          9803240984479279834
+          14585360205407043670
         ]
       ], 
       "ignore-failure": false
     }, 
     "bitmapcopy_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          2313731350192068686
+          14568440907578075057
         ]
       ], 
       "ignore-failure": false
     }, 
     "bitmapcopy_msaa16.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           1867412638320007119
         ]
@@ skipping 6237 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           9151974350149210736
         ]
       ], 
       "ignore-failure": false
     }
   }
 }