Runtime configuration setting for suppressing JPEG decoder errors.

Add new runtime config variable, images.jpeg.suppressDecoderErrors
which defaults to false in Debug and true otherwise.  When Jpeg errors
are suppressed and an error happens, SkJPEGImageDecoder::onDecode()
will return silently false (Consequently, so will SkImageDecoder's
DecodeFile() and DecodeMemory() functions).

Also, the test_image_decoder program now respects runtime
configuration settings.

BUG=skia:1680
R=scroggo@google.com

Review URL: https://codereview.chromium.org/27230002

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11763 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed