Give asan/win bot a very generous timeout.

base/test/test_timeouts.cc

Index: base/test/test_timeouts.cc
diff --git a/base/test/test_timeouts.cc b/base/test/test_timeouts.cc
index 582598bb71a1f7ac0ff5e7f4eae78b5a69654957..c84cd3812e80f0eab1724de8757d3bd47df01dc1 100644
--- a/base/test/test_timeouts.cc
+++ b/base/test/test_timeouts.cc
@@ -23,7 +23,7 @@ static const int kTimeoutMultiplier = 6;
 #elif defined(ADDRESS_SANITIZER) && defined(OS_WIN)
 // Asan/Win has not been optimized yet, give it a higher
 // timeout multiplier. See http://crbug.com/412471
-static const int kTimeoutMultiplier = 3;
+static const int kTimeoutMultiplier = 8;
 #elif defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) || \
     defined(SYZYASAN)
 static const int kTimeoutMultiplier = 2;