Rename Supplement::host() to Supplement::supplementable()

third_party/WebKit/Source/core/timing/DOMWindowPerformance.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/timing/DOMWindowPerformance.h"
 
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/timing/Performance.h"
 
@@ skipping 23 matching lines @@
   return *supplement;
 }
 
 // static
 Performance* DOMWindowPerformance::performance(DOMWindow& window) {
   return from(toLocalDOMWindow(window)).performance();
 }
 
 Performance* DOMWindowPerformance::performance() {
   if (!m_performance)
-    m_performance = Performance::create(host()->frame());
+    m_performance = Performance::create(supplementable()->frame());
   return m_performance.get();
 }
 
 }  // namespace blink