shaderc: fix run_tests.sh

[DavidKorczynski]

python3 infra/experimental/chronos/manager.py check-tests --integrity-check shaderc
...
[0/1] Running tests...
Test project /src/shaderc/build
      Start  1: glslang-testsuite
      Start  2: glslang-gtests
      Start  3: shaderc_util_counting_includer
      Start  4: shaderc_util_string_piece
      Start  5: shaderc_util_format
      Start  6: shaderc_util_file_finder
      Start  7: shaderc_util_io_shaderc
      Start  8: shaderc_util_message
      Start  9: shaderc_util_mutex
      Start 10: shaderc_util_version_profile
      Start 11: shaderc_util_compiler
      Start 12: shaderc_shaderc
      Start 13: shaderc_shaderc_cpp
      Start 14: shaderc_shaderc_private
      Start 15: shaderc_shared_shaderc
      Start 16: shaderc_shared_shaderc_cpp
      Start 17: shaderc_shared_shaderc_private
      Start 18: shaderc_combined_shaderc
      Start 19: shaderc_combined_shaderc_cpp
      Start 20: shaderc_c_smoke_test
      Start 21: glslc_file
      Start 22: glslc_resource_parse
      Start 23: glslc_stage
      Start 24: shaderc_expect_unittests
      Start 25: shaderc_glslc_test_framework_unittests
      Start 26: glslc_tests
 1/26 Test  #3: shaderc_util_counting_includer ...........   Passed    0.03 sec
 2/26 Test  #4: shaderc_util_string_piece ................   Passed    0.03 sec
 3/26 Test  #5: shaderc_util_format ......................   Passed    0.03 sec
 4/26 Test  #6: shaderc_util_file_finder .................   Passed    0.03 sec
 5/26 Test  #8: shaderc_util_message .....................   Passed    0.03 sec
 6/26 Test  #9: shaderc_util_mutex .......................   Passed    0.03 sec
 7/26 Test  #7: shaderc_util_io_shaderc ..................   Passed    0.03 sec
 8/26 Test #14: shaderc_shaderc_private ..................   Passed    0.03 sec
 9/26 Test #10: shaderc_util_version_profile .............   Passed    0.03 sec
10/26 Test #21: glslc_file ...............................   Passed    0.02 sec
11/26 Test #23: glslc_stage ..............................   Passed    0.02 sec
12/26 Test #22: glslc_resource_parse .....................   Passed    0.02 sec
13/26 Test #17: shaderc_shared_shaderc_private ...........   Passed    0.04 sec
14/26 Test #25: shaderc_glslc_test_framework_unittests ...   Passed    0.11 sec
15/26 Test #24: shaderc_expect_unittests .................   Passed    0.12 sec
16/26 Test #20: shaderc_c_smoke_test .....................   Passed    0.35 sec
17/26 Test #11: shaderc_util_compiler ....................   Passed   17.57 sec
18/26 Test  #2: glslang-gtests ...........................   Passed   22.43 sec
19/26 Test #19: shaderc_combined_shaderc_cpp .............   Passed   28.06 sec
20/26 Test #13: shaderc_shaderc_cpp ......................   Passed   28.35 sec
21/26 Test #18: shaderc_combined_shaderc .................   Passed   35.81 sec
22/26 Test #12: shaderc_shaderc ..........................   Passed   35.83 sec
23/26 Test #16: shaderc_shared_shaderc_cpp ...............   Passed   44.99 sec
24/26 Test #15: shaderc_shared_shaderc ...................   Passed   57.23 sec
25/26 Test  #1: glslang-testsuite ........................   Passed   59.93 sec
26/26 Test #26: glslc_tests ..............................   Passed   91.32 sec

100% tests passed, 0 tests failed out of 26

Total Test time (real) =  91.35 sec
Integrity validator run tests for project: shaderc
Diff patching for stage after.
Diff patch analysis begin. Stage: after, Current working dir: /src/shaderc
Diff patch analysis after stage.
Wrong number of directories found under /src/
['shaderc', 'glsl_seed', 'glslang']
Multiple project directories found under /src/
Git repo found: /src/shaderc
Diff patch generated at /tmp/chronos-diff.patch
Difference between diffs:
Patch result: success. No patch found that affects source control versioning.
INFO:__main__:succeeded patch: True
INFO:__main__:shaderc test completion succeeded: Duration of run_tests.sh: 92.22 seconds