Rebaseline 565 precision changes and matrixconvolution.

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

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 10549 matching lines @@
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "matrixconvolution_angle.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          15164454502421138581
+          8299715471717602450
         ]
       ], 
       "ignore-failure": false, 
       "reviewed-by-human": true
     }, 
     "matrixconvolution_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2994579633452577661
@@ skipping 4878 matching lines @@
           14019814087375927425
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }