rebaseline srcmode for gpus -- now pass samplecount

expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Release/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 17690 matching lines @@
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }, 
     "srcmode_msaa16.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          2564656089209715121
+          17096263395741508590
         ]
       ], 
-      "bugs": [
-        1935
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "srcmode_nvprmsaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3720605705123675736
+          17270187377959589435
         ]
       ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "srcmode_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           15087588066062901322
         ]
       ], 
       "bugs": [
         1935
@@ skipping 2157 matching lines @@
           "bitmap-64bitMD5", 
           14019814087375927425
         ]
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }
   }
-}
+}