Rename cleanup in comments in css/ directory.

third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h

Index: third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h
diff --git a/third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h b/third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h
index 70e50fa376a68f3051996ea2ef61f4c6f582c22a..23f2e3bbe0bc9fb4a942503ffc3b9b3165ec0f9d 100644
--- a/third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h
+++ b/third_party/WebKit/Source/core/css/invalidation/InvalidationSet.h
@@ -183,7 +183,7 @@ class CORE_EXPORT InvalidationSet {
   // Implement reference counting manually so we can call a derived
   // class destructor when the reference count decreases to 0.
   // If we use RefCounted instead, at least one of our compilers
-  // requires the ability for RefCounted<InvalidationSet>::deref()
+  // requires the ability for RefCounted<InvalidationSet>::Deref()
   // to call ~InvalidationSet(), but this is not a virtual call.
   int ref_count_;