Rebaseline scaled_tilemode_gradient GM tests

expectations/gm/Test-Android-IntelRhb-SGX544-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 4926 matching lines @@
       ], 
       "bugs": [
         1603
       ], 
       "reviewed-by-human": false
     }, 
     "scaled_tilemode_gradient_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1927711519913085956
+          12800833815245539795
         ]
       ], 
       "bugs": [
         1603
       ], 
       "reviewed-by-human": false
     }, 
     "scaled_tilemodes_565.png": {
       "allowed-digests": [
         [
@@ skipping 997 matching lines @@
           4923266169994338413
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }