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

expectations/gm/Test-Win7-ShuttleA-HD2000-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 879 matching lines @@
           "bitmap-64bitMD5", 
           13897226711214500859
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "bitmapshaders_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1952697061591328574
+          14493644938506788674
         ]
       ], 
-      "reviewed-by-human": false
+      "bugs": [
+        2293
+      ], 
+      "reviewed-by-human": true
     }, 
     "bitmapshaders_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           14511990317404630946
         ]
       ], 
       "reviewed-by-human": false
     }, 
@@ skipping 11730 matching lines @@
           14019814087375927425
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }