The clang compiler now supports asan. No need to use the custom asan compiler.
The clang compiler now supports asan. No need to use the custom asan compiler.

TBR=maruel

Review URL: http://codereview.chromium.org/9701027

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@126666 0039d316-1c4b-4281-b951-d872f2087c98

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