Mark rrect_clip_aa, skbug1719, and pathopsskpclip as ignored on N4 gpu

expectations/gm/Test-Android-Nexus4-Adreno320-Arm7-Debug/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 5545 matching lines @@
           "bitmap-64bitMD5", 
           176614857798043469
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "pathopsskpclip_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          4653135433130781818
+          9727645049729731146
         ]
       ], 
+      "bugs": [
+        1888
+      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "perlinnoise_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           13764620869463944032
         ]
       ], 
       "reviewed-by-human": true
@@ skipping 319 matching lines @@
           "bitmap-64bitMD5", 
           1327393574953721077
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "rrect_clip_aa_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          7902201343537102377
+          10145541844672784873
         ]
       ], 
+      "bugs": [
+        1888
+      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "rrect_clip_bw_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           3700930181756437246
         ]
       ], 
       "reviewed-by-human": true
@@ skipping 503 matching lines @@
       ], 
       "bugs": [
         1780
       ], 
       "reviewed-by-human": true
     }, 
     "skbug1719_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          6492759999839586343
+          8692142146675316598
         ]
       ], 
       "bugs": [
-        1780
+        1888
       ], 
+      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "spritebitmap_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12747782108628857838
         ]
       ], 
       "bugs": [
@@ skipping 854 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           4560310127555905075
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }