Mass rebaseline of the rrect_* GMs

expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json

 {
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   "expected-results": {
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@@ skipping 10614 matching lines @@
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     }, 
     "rrect_clip_bw_pdf-mac.png": {
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     "rrect_gpu.png": {
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@@ skipping 2653 matching lines @@
           7829854837061118142
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       "bugs": [
         1578
       ], 
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     }
   }
 }