rebaseline downsample_text and downsample_checkerboard GMs on gpu configs

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

Index: expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release-ANGLE/expected-results.json
diff --git a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release-ANGLE/expected-results.json b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release-ANGLE/expected-results.json
index 0fb363af26a04ad54a46d064beb11ba886ec83eb..0ebb9fbf94573e79940e20f1783a91e37917e6cb 100644
--- a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release-ANGLE/expected-results.json
+++ b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Release-ANGLE/expected-results.json
@@ -5948,23 +5948,19 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12241316569839901585
+          14916900785927829017
         ]
       ], 
-      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "downsamplebitmap_checkerboard_high_512_256_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12241316569839901585
+          14883788634267734591
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "downsamplebitmap_checkerboard_high_512_256_pdf-poppler.png": {
       "allowed-digests": [
@@ -6066,10 +6062,9 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12241316569839901585
+          8197937578774172307
         ]
       ], 
-      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "downsamplebitmap_checkerboard_medium_512_256_gpu.png": {
@@ -6415,23 +6410,19 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3631077966779184085
+          452054886132892837
         ]
       ], 
-      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "downsamplebitmap_text_high_72.00pt_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          2141019891928343978
+          17724554139633342897
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "downsamplebitmap_text_high_72.00pt_pdf-poppler.png": {
       "allowed-digests": [
@@ -6533,10 +6524,9 @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3631077966779184085
+          14823543740668188829
         ]
       ], 
-      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "downsamplebitmap_text_medium_72.00pt_gpu.png": {