Mark pdf filterbitmap images as failure ignored

expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json

Index: expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
diff --git a/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json b/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
index 5e5001d7d927c2267e78d77f01cc282b7e786e37..78f8574916070e4bdfbb5a0f6f256c4510357f8b 100644
--- a/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
+++ b/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
@@ -6409,12 +6409,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          13126261783377006996
+          17709234466906542744
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_checkerboard_32_2_565.png": {
@@ -6448,12 +6446,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10468253056731813181
+          13803288591103200787
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_checkerboard_32_32_565.png": {
@@ -6487,12 +6483,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          6040989489253256282
+          5337379195053130790
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_checkerboard_32_8_565.png": {
@@ -6526,12 +6520,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          9674811266443562004
+          1335520190340626540
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_checkerboard_4_4_565.png": {
@@ -6565,12 +6557,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14082695199848035351
+          15687195712367642858
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_128.png_565.png": {
@@ -6604,24 +6594,20 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14835742746481700457
+          4225546747773668058
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_128.png_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10678043300980517376
+          16054585167106196589
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_16.png_565.png": {
@@ -6655,12 +6641,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          10810683941626771816
+          10199966342165853208
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_256.png_565.png": {
@@ -6694,24 +6678,20 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          13957912546162131514
+          1304592863940011328
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_256.png_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          9832651185429404596
+          7941051532651737680
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_32.png_565.png": {
@@ -6745,12 +6725,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12205894104889377579
+          4489824427267759337
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_512.png_565.png": {
@@ -6784,24 +6762,20 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          13071772474452701276
+          6747277782436671035
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_512.png_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1866160515636785656
+          13858594519782999967
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_image_mandrill_64.png_565.png": {
@@ -6835,12 +6809,10 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          5262374692439486404
+          9610818177149537046
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "filterbitmap_text_10.00pt_565.png": {