Rebaseline multipicturedraw GMs

expectations/gm/Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 12450 matching lines @@
           "bitmap-64bitMD5", 
           3106140989036002287
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_simple_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10792051826018298457
+          5895899203449139966
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_simple_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           3106140989036002287
         ]
@@ skipping 15 matching lines @@
           "bitmap-64bitMD5", 
           11584702396639674615
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_tiled_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3808192963466091005
+          13186588997955809762
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_tiled_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2278881344728331643
         ]
@@ skipping 5139 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11835374726311942978
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }