* Removed bitmapshaders from expectations/gm/ignored-tests.txt.

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

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 1138 matching lines @@
           "bitmap-64bitMD5", 
           13897226711214500859
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "bitmapshaders_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          5197903277365321489
+          4292341330653523437
         ]
       ], 
-      "reviewed-by-human": false
+      "bugs": [
+        2293
+      ], 
+      "reviewed-by-human": true
     }, 
     "bitmapshaders_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           707206315357179358
         ]
       ], 
       "reviewed-by-human": false
     }, 
@@ skipping 15798 matching lines @@
           7829854837061118142
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }