Add suppressions for Issue 1784

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 2392 matching lines @@
           "bitmap-64bitMD5", 
           6636035133366732045
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "complexclip_aa_layer_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12924545312840387417
+          11907006945691145567
         ]
       ], 
+      "bugs": [
+        1784
+      ], 
       "reviewed-by-human": true
     }, 
     "complexclip_bw_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           4502416632695009870
         ]
       ], 
       "reviewed-by-human": true
@@ skipping 3461 matching lines @@
           "bitmap-64bitMD5", 
           8959032538759642084
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "rrect_clip_aa_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14988735256958390771
+          9371344186690185987
         ]
       ], 
+      "bugs": [
+        1784
+      ], 
       "reviewed-by-human": true
     }, 
     "rrect_clip_bw_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2238002539794418005
         ]
       ], 
       "reviewed-by-human": true
@@ skipping 1388 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           14770070422462064988
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }