Replace use of deprecated CG methods.

expectations/gm/Test-Win8-ShuttleA-GTX660-x86-Release/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 18348 matching lines @@
       ], 
       "bugs": [
         1935
       ], 
       "reviewed-by-human": false
     }, 
     "shadertext2_8888.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          3831063373917728128
+          3842687298137299011
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "shadertext2_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          11558777522282590832
+          14073061431532239187
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "shadertext2_msaa16.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          1729916360334344548
+          2795433082744565454
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "shadertext2_nvprmsaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          5441129619971163954
+          8485952545707534084
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "shadertext2_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2811553342126518865
         ]
@@ skipping 3378 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11835374726311942978
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }