More circle rebaselines on gpu

expectations/gm/Test-Win7-ShuttleA-HD2000-x86_64-Debug/expected-results.json

 {
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   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 8497 matching lines @@
           "bitmap-64bitMD5", 
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         ]
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     "image-surface_gpu.png": {
       "allowed-digests": [
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           "bitmap-64bitMD5", 
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+          767755014954954375
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@@ skipping 3620 matching lines @@
           "bitmap-64bitMD5", 
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         [
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+          2985002905646249658
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     }, 
     "shadows_pdf-poppler.png": {
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         [
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       "bugs": [
         1578
@@ skipping 2085 matching lines @@
       "allowed-digests": [
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       "reviewed-by-human": true
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 }