rebaseline srcmode for gpus -- now pass samplecount

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 10470 matching lines @@
           "bitmap-64bitMD5", 
           1380374968369111790
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "srcmode_msaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1380374968369111790
+          3667844303713142499
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "stringart_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           517466260915157438
         ]
@@ skipping 1208 matching lines @@
     "xfermodes_msaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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         ]
       ], 
       "reviewed-by-human": true
     }
   }
-}
+}