Fix off-by-one error in counter array sizing in BlimpStats.

blimp/net/blimp_stats.h

Index: blimp/net/blimp_stats.h
diff --git a/blimp/net/blimp_stats.h b/blimp/net/blimp_stats.h
index c4019f3fdb1ca11c68dfdcc8289303846d1bd8f0..daba94b416b771959ca99d7437d12c18f486dc3c 100644
--- a/blimp/net/blimp_stats.h
+++ b/blimp/net/blimp_stats.h
@@ -49,7 +49,7 @@ class BLIMP_NET_EXPORT BlimpStats {
   // Values must be read or modified using base::subtle::NoBarrier* functions.
   // We are using the NoBarrier* functions because we value performance over
   // accuracy of the data.
-  base::subtle::Atomic32 values_[EVENT_TYPE_MAX];
+  base::subtle::Atomic32 values_[EVENT_TYPE_MAX + 1];
 
   DISALLOW_COPY_AND_ASSIGN(BlimpStats);
 };