Use platform specific test results as fallback in difference tests

Use platform specific test results as fallback in difference tests

So far, we have only two Windows tests require to use platform specific
test results due to platform idiosyncracies. However, VS2015 has fixed
those issues.
So in general, We only need to use platform based results if checking
against the regular results failed.

Committed: https://pdfium.googlesource.com/pdfium/+/c3b26b1479824aa5ce745c220a82de7528bc26a9

[Wei Li, 2016-04-15 16:17:55]

Patchset #1 (id:1) has been deleted

[Wei Li, 2016-04-15 16:18:45]

weili@chromium.org changed reviewers:
+ tsepez@chromium.org

[Wei Li, 2016-04-15 16:18:45]

PTAL, thanks

[Tom Sepez, 2016-04-15 16:32:32]

we should probably just do the same on all ports, namely, try the "generic"
result, and if that fails, look for a platform specific result, and try that if
it exists.

[Wei Li, 2016-04-15 17:43:43]

On 2016/04/15 16:32:32, Tom Sepez wrote:
> we should probably just do the same on all ports, namely, try the "generic"
> result, and if that fails, look for a platform specific result, and try that
if
> it exists.

Done.

My original thought was we don't need to check for generic results on Mac as I
am 
not sure the differences will be resolved. We can save some test run time. But 
since those are all in pixel tests which are light, so it should be fine.

[Wei Li, 2016-04-15 17:45:04]

Description was changed from

==========
Use Windows specific test results as fallback in difference tests

So far, we have only two Windows tests require to use platform specific
test results due to platform idiosyncracies. However, VS2015 has fixed
those issues. We only need to use platform based results if checking
against the regular results failed.
==========

to

==========
Use platform specific test results as fallback in difference tests

So far, we have only two Windows tests require to use platform specific
test results due to platform idiosyncracies. However, VS2015 has fixed
those issues.
So in general, We only need to use platform based results if checking
against the regular results failed.
==========

[Tom Sepez, 2016-04-15 18:45:21]

lgtm

[Wei Li, 2016-04-15 18:49:56]

The CQ bit was checked by weili@chromium.org

[commit-bot: I haz the power, 2016-04-15 18:49:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1892013003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1892013003/40001

[commit-bot: I haz the power, 2016-04-15 19:03:04]

Description was changed from

==========
Use platform specific test results as fallback in difference tests

So far, we have only two Windows tests require to use platform specific
test results due to platform idiosyncracies. However, VS2015 has fixed
those issues.
So in general, We only need to use platform based results if checking
against the regular results failed.
==========

to

==========
Use platform specific test results as fallback in difference tests

So far, we have only two Windows tests require to use platform specific
test results due to platform idiosyncracies. However, VS2015 has fixed
those issues.
So in general, We only need to use platform based results if checking
against the regular results failed.

Committed:
https://pdfium.googlesource.com/pdfium/+/c3b26b1479824aa5ce745c220a82de7528bc...
==========

[commit-bot: I haz the power, 2016-04-15 19:03:05]

Committed patchset #2 (id:40001) as
https://pdfium.googlesource.com/pdfium/+/c3b26b1479824aa5ce745c220a82de7528bc...