More bulk rebaselining. I reviewed all the images, mostly from CLs.

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

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 9849 matching lines @@
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "srcmode_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          248128091148658883
+          17675140436591244002
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "srcmode_pdf-poppler.png": {
       "allowed-digests": [
         [
@@ skipping 849 matching lines @@
           "bitmap-64bitMD5", 
           3564841414622439452
         ]
       ], 
       "ignore-failure": false
     }, 
     "verttext2_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          12923408472393428718
+          5702202768825428352
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "verttext2_pdf-poppler.png": {
       "allowed-digests": [
         [
@@ skipping 241 matching lines @@
           9206571293968307032
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }