New Nexus4 and Win7 perspective baselines for xfermodeimagefilter GM.

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

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           9785004568147979273
         ]
       ], 
       "bugs": [
@@ skipping 12956 matching lines @@
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }, 
     "xfermodeimagefilter_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          6373518335115440684
+          17987163926472091210
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }, 
     "xfermodeimagefilter_pdf-poppler.png": {
       "allowed-digests": [
         [
@@ skipping 97 matching lines @@
           15843716056234692659
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }
   }
 }