rebaselines for imageblur, imagemagnifier, and still some for gradient_radial2

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

 {
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   "expected-results": {
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       "allowed-digests": [
@@ skipping 9277 matching lines @@
       ], 
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     "imagefiltersbase_565.png": {
       "allowed-digests": [
         [
@@ skipping 149 matching lines @@
       ], 
       "bugs": [
         1578
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     }, 
     "imagemagnifier_pdf-poppler.png": {
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     "internal_links_565.png": {
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@@ skipping 5112 matching lines @@
           9206571293968307032
         ]
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       "bugs": [
         1578
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   }
 }