mark flaky GM tests as ignore-failure

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

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           9785004568147979273
         ]
       ], 
       "bugs": [
@@ skipping 2937 matching lines @@
         [
           "bitmap-64bitMD5", 
           3089736967613501224
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }, 
     "blurs_gpu.png": {

[epoger, 2014/05/02 18:15:21]

I guess this is related to other GPU tests that are flaky in perspective mode on
Win7, like http://skbug.com/2332 ('complexclip2_rect_aa_gpu GM is flaky in
perspective mode (Win7)')

       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          15988401162496752256
+          12226828480489288358
         ]
       ], 
       "bugs": [
-        2146
+        2332
       ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "blurs_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           6504733638373973787
         ]
       ], 
       "bugs": [
@@ skipping 10341 matching lines @@
           15843716056234692659
         ]
       ], 
       "bugs": [
         2146
       ], 
       "reviewed-by-human": false
     }
   }
 }