Fix sanitizer_coverage GYP flag for LKGR ASan builds.
Fix sanitizer_coverage GYP flag for LKGR ASan builds.

BUG=589620
R=thakis@chromium.org

NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1732583004

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@298947 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build