Set '%c' in LLVM_PROFILE_FILE for continuous mode

Bug: http://b/194128476

If CLANG_COVERAGE_CONTINUOUS_MODE is set, enable continuous mode by
adding '%c' to LLVM_PROFILE_FILE.

Test: CLANG_COVERAGE_CONTINUOUS_MODE m and verify continuous mode works.
Change-Id: I8ace01f2aeaef62857e73308b04a535739171b53
1 file changed