Rebaseline imagemagnifier and dropshadowimagefilter tests.

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

 {
   "actual-results": {
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     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
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       "allowed-digests": [
@@ skipping 5408 matching lines @@
       ], 
       "bugs": [
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     }, 
     "dropshadowimagefilter_565.png": {
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         [
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     "dropshadowimagefilter_pdf-poppler.png": {
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         ]
@@ skipping 3007 matching lines @@
         [
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     }, 
     "imagemagnifier_565.png": {
       "allowed-digests": [
         [
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     "imagemagnifier_8888.png": {
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       "reviewed-by-human": true
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     "imagemagnifier_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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     }, 
     "imagemagnifier_pdf-poppler.png": {
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         [
           "bitmap-64bitMD5", 
           6977401320822346760
         ]
@@ skipping 5146 matching lines @@
       "allowed-digests": [
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           "bitmap-64bitMD5", 
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       "reviewed-by-human": true
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   }
 }