gradtext also needed rebaselining from the gamma change

expectations/gm/Test-Android-Nexus10-MaliT604-Arm7-Debug/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 7173 matching lines @@
           "bitmap-64bitMD5", 
           8988444324654919932
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "gradtext_8888.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          16789610920024985846
+          8157217091633419434
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "gradtext_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          811625466027095214
+          150610904007713741
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "gradtext_msaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          811625466027095214
+          150610904007713741
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "hairlines_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           3746404902639900755
         ]
@@ skipping 4748 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           14037617966684837344
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }