Fix the same case id in webapi-webgl-khronos-tests (#3689)
Fix the same case id in webapi-webgl-khronos-tests (#3689)

BUG=https://crosswalk-project.org/jira/browse/CTS-1823
BruceDai/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,haoxli/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,BruceDai/crosswalk-test-suite,haoxli/crosswalk-test-suite,ibelem/crosswalk-test-suite,ibelem/crosswalk-test-suite,Honry/crosswalk-test-suite,Honry/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,BruceDai/crosswalk-test-suite,BruceDai/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,haoxli/crosswalk-test-suite,BruceDai/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,Honry/crosswalk-test-suite,haoxli/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,haoxli/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,Honry/crosswalk-test-suite,ibelem/crosswalk-test-suite,haoxli/crosswalk-test-suite,BruceDai/crosswalk-test-suite,BruceDai/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,ibelem/crosswalk-test-suite,BruceDai/crosswalk-test-suite,ibelem/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,Honry/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,ibelem/crosswalk-test-suite,Honry/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,ibelem/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,haoxli/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,Honry/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,haoxli/crosswalk-test-suite,Honry/crosswalk-test-suite,ibelem/crosswalk-test-suite