Rebaseline multipicturedraw GMs

expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           9785004568147979273
         ]
       ], 
       "bugs": [
@@ skipping 9846 matching lines @@
           "bitmap-64bitMD5", 
           7921707009819936685
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_simple_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          4949974691056685821
+          14098855421153882171
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_sierpinski_tiled_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           16085342296695575477
         ]
@@ skipping 4023 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12937422788648264516
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }