Oilpan: fix build after r190610 (214ee03e).

Source/core/frame/TopControls.h

-/*
- * Copyright (C) 2015 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
+// 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.
 
 #ifndef TopControls_h
 #define TopControls_h
 
 #include "platform/heap/Handle.h"
 #include "public/platform/WebTopControlsState.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 class FrameHost;
 class FloatSize;
 
 // This class encapsulate data and logic required to show/hide top controls
 // duplicating cc::TopControlsManager behaviour.  Top controls' self-animation
 // to completion is still handled by compositor and kicks in when scrolling is
 // complete (i.e, upon ScrollEnd or FlingEnd).
 class TopControls final : public NoBaseWillBeGarbageCollectedFinalized<TopControls> {
 public:
     static PassOwnPtrWillBeRawPtr<TopControls> create(const FrameHost& host)
     {
         return adoptPtrWillBeNoop(new TopControls(host));
     }
 
+    ~TopControls();
+    void trace(Visitor*);
+
     // The amount that the viewport was shrunk by to accommodate the top
     // controls.
     float layoutHeight();
     // The amount that top controls are currently shown.
     float contentOffset();
 
     float height() const { return m_height; }
     bool shrinkViewport() const { return m_shrinkViewport; }
     void setHeight(float height, bool shrinkViewport);
 
     float shownRatio() const { return m_shownRatio; }
     void setShownRatio(float);
 
     void updateConstraints(WebTopControlsState constraints);
 
     void scrollBegin();
 
     // Scrolls top controls vertically if possible and returns the remaining scroll
     // amount.
     FloatSize scrollBy(FloatSize scrollDelta);
 
 private:
     explicit TopControls(const FrameHost&);
     void resetBaseline();
 
-    const FrameHost& m_frameHost;
+    RawPtrWillBeMember<const FrameHost> m_frameHost;
 
     // The top controls height regardless of whether it is visible or not.
     float m_height;
 
     // The top controls shown amount (normalized from 0 to 1) since the last
     // compositor commit. This value is updated from two sources:
     // (1) compositor (impl) thread at the beginning of frame if it has
     //     scrolled top controls since last commit.
     // (2) blink (main) thread updates this value if it scrolls top controls
     //     when responding to gesture scroll events.
@@ skipping 11 matching lines @@
     // controls height.
     bool m_shrinkViewport;
 
     // Constraints on the top controls state
     WebTopControlsState m_permittedState;
 
 };
 } // namespace blink
 
 #endif // TopControls_h