Remove C::swap(C*) where C = Hash{Map,Set}<T>.

third_party/WebKit/Source/wtf/HashMap.h

Index: third_party/WebKit/Source/wtf/HashMap.h
diff --git a/third_party/WebKit/Source/wtf/HashMap.h b/third_party/WebKit/Source/wtf/HashMap.h
index 16efe2fa998e145d841b8bc0ad92343339323dc5..77a1a3b1dfc2533cb723b0999cc0facde699e123 100644
--- a/third_party/WebKit/Source/wtf/HashMap.h
+++ b/third_party/WebKit/Source/wtf/HashMap.h
@@ -81,12 +81,6 @@ public:
         m_impl.swap(ref.m_impl);
     }
 
-    void swap(typename Allocator::template OtherType<HashMap>::Type other)
-    {
-        HashMap& ref = Allocator::getOther(other);
-        m_impl.swap(ref.m_impl);
-    }
-
     unsigned size() const;
     unsigned capacity() const;
     void reserveCapacityForSize(unsigned size)