Rebaseline 565 precision changes and matrixconvolution.

expectations/gm/Test-Win8-ShuttleA-HD7770-x86_64-Release/expected-results.json

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@@ skipping 7888 matching lines @@
       ], 
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@@ skipping 981 matching lines @@
       ], 
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     "matrixconvolution_gpu.png": {
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@@ skipping 4219 matching lines @@
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       "bugs": [
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       "reviewed-by-human": false
     }
   }
 }