Take care of a bunch of pending GPU rebaselines and remove tests from ignored-tests.txt

expectations/gm/Test-Win8-ShuttleA-HD7770-x86-Release/expected-results.json

 {
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           "bitmap-64bitMD5", 
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       "bugs": [
@@ skipping 5140 matching lines @@
       ], 
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         1935
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     "downsamplebitmap_checkerboard_high_512_256_gpu.png": {
       "allowed-digests": [
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           "bitmap-64bitMD5", 
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+          10705771699045417639
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+      "reviewed-by-human": true
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       "allowed-digests": [
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       "bugs": [
         1935
@@ skipping 165 matching lines @@
       ], 
       "bugs": [
         1935
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+          4080615844295629366
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-        1935
-      ], 
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+      "reviewed-by-human": true
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     "downsamplebitmap_image_high_mandrill_512.png_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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       ], 
       "bugs": [
         1935
@@ skipping 165 matching lines @@
       ], 
       "bugs": [
         1935
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     "downsamplebitmap_text_high_72.00pt_gpu.png": {
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-          3170242940956178949
+          7227409546001357465
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-      "bugs": [
-        1935
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
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       "allowed-digests": [
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           "bitmap-64bitMD5", 
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       "bugs": [
         1935
@@ skipping 693 matching lines @@
           "bitmap-64bitMD5", 
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       "reviewed-by-human": true
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     "filterbitmap_checkerboard_192_192_gpu.png": {
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+          1971355163960977590
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-        1935
-      ], 
-      "reviewed-by-human": false
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     "filterbitmap_checkerboard_192_192_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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       ], 
       "bugs": [
         1935
@@ skipping 7056 matching lines @@
           "bitmap-64bitMD5", 
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       "reviewed-by-human": false
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     "vertices_80_gpu.png": {
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     "vertices_80_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           5541447607866535516
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       "reviewed-by-human": false
     }, 
@@ skipping 349 matching lines @@
           14019814087375927425
         ]
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }
   }
 }