Return early for vec.remove(position, 0).

third_party/WebKit/Source/wtf/Vector.h

Index: third_party/WebKit/Source/wtf/Vector.h
diff --git a/third_party/WebKit/Source/wtf/Vector.h b/third_party/WebKit/Source/wtf/Vector.h
index 972c7377f9684de030b9897ff193694777ae002d..25035266cc2d5ab1ef8e1738a799cff0566ca283 100644
--- a/third_party/WebKit/Source/wtf/Vector.h
+++ b/third_party/WebKit/Source/wtf/Vector.h
@@ -1264,6 +1264,8 @@ static const size_t kInitialVectorSize = WTF_VECTOR_INITIAL_SIZE;
     inline void Vector<T, inlineCapacity, Allocator>::remove(size_t position, size_t length)
     {
         ASSERT_WITH_SECURITY_IMPLICATION(position <= size());
+        if (!length)
+            return;
         RELEASE_ASSERT(position + length <= size());
         T* beginSpot = begin() + position;
         T* endSpot = beginSpot + length;