Update fontMgr expectations for Mac/Linux/Windows

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

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 6406 matching lines @@
           "bitmap-64bitMD5", 
           6940737243764937510
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "fontmgr_iter_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10433897477521617665
+          6940737243764937510
         ]
       ], 
       "ignore-failure": true, 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "fontmgr_match_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           6912355345607947791
         ]
       ], 
       "reviewed-by-human": true
     }, 
@@ skipping 6299 matching lines @@
           14019814087375927425
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }