Roll ASan/Win to r212815

This should enable NULL deref and wild memory access detection!

TBR=rnk@chromium.org
BUG=345874
NOTRY=true

Review URL: https://codereview.chromium.org/387013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282632 0039d316-1c4b-4281-b951-d872f2087c98

tools/clang/scripts/update.py

@@ -22,7 +22,7 @@ LLVM_WIN_REVISION = 'HEAD'
 # in bringup. Use a pinned revision to make it slightly more stable.
 if (re.search(r'\b(asan)=1', os.environ.get('GYP_DEFINES', '')) and
     not 'LLVM_FORCE_HEAD_REVISION' in os.environ):
-  LLVM_WIN_REVISION = '212587'
+  LLVM_WIN_REVISION = '212815'
 
 # Path constants. (All of these should be absolute paths.)
 THIS_DIR = os.path.abspath(os.path.dirname(__file__))