Revert of Rebaseline imagemagnifier and dropshadowimagefilter tests.

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

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 6820 matching lines @@
         [
           "bitmap-64bitMD5", 
           16375219338730536333
         ]
       ]
     }, 
     "dropshadowimagefilter_angle.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1822542588725863164
+          6269586002134908784
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "dropshadowimagefilter_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           652105149337720065
         ]
@@ skipping 3269 matching lines @@
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "imagemagnifier_angle.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          5135773134197521338
+          10548005182299770458
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "imagemagnifier_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12316458082598669525
         ]
@@ skipping 5640 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12937422788648264516
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }