gm: since we don't record output of gpudebug test, don't record checksums either

gm: since we don't record output of gpudebug test, don't record checksums either
BUG=https://code.google.com/p/skia/issues/detail?id=1410
R=robertphillips@google.com

Committed: https://code.google.com/p/skia/source/detail?r=10046

[epoger, 2013-07-12 15:44:08]

Ready for review...

https://codereview.chromium.org/19096012/diff/1/gm/gmmain.cpp
File gm/gmmain.cpp (right):

https://codereview.chromium.org/19096012/diff/1/gm/gmmain.cpp#newcode929
gm/gmmain.cpp:929: } else if (!(gRec.fFlags & kWrite_ConfigFlag)) {
Tested as follows:

$ out/Debug/gm --config gpudebug --writePath tmp --verbose --match xfermodes2
--writeJsonSummaryPath tmp/out.json
Non-default runtime configuration options:
GM: These configs will be run: gpudebug
GM: writing to tmp
GM: drawing... xfermodes2 [455 475]
GM: Ran 1 GMs
GM: ... over  1 configs ["gpudebug"]
GM: ...  and  7 modes   ["pipe", "pipe cross-process", "pipe cross-process,
shared address", "replay", "rtree", "serialize", "tilegrid"]
GM: ... so there should be a total of 8 tests.
GM: Ran 8 tests: NoGpuContext=0 IntentionallySkipped=1 RenderModeMismatch=0
ExpectationsMismatch=0 MissingExpectations=0 WritingReferenceImage=0
GM: [*] 0 NoGpuContext:
GM: [ ] 1 IntentionallySkipped: xfermodes2_gpudebug
GM: [*] 0 RenderModeMismatch:
GM: [*] 0 ExpectationsMismatch:
GM: [ ] 0 MissingExpectations:
GM: [*] 0 WritingReferenceImage:
GM: (results marked with [*] will cause nonzero return value)
--- Program Cache ---
Total requests: 350
Cache misses: 20
Cache miss %: 5.714286
Hash miss %: 3.939394
---------------------

$ ls tmp
out.json

$ cat tmp/out.json
 {
   "actual-results" : {
      "failed" : null,
      "failure-ignored" : null,
      "no-comparison" : null,
      "succeeded" : null
   },
   "expected-results" : null
}

[robertphillips, 2013-07-12 15:49:00]

lgtm. Whatever happened to the NULL GPU config?

[epoger, 2013-07-12 15:52:45]

On 2013/07/12 15:49:00, robertphillips wrote:
> lgtm. 

> Whatever happened to the NULL GPU config?

I don't know what that means.  I'm going to assume that all of those letters are
just punctuation after the "lgtm".

[epoger, 2013-07-12 15:53:01]

Committed patchset #1 manually as r10046 (presubmit successful).