Fix build break after https://crrev.com/b2fce5b3734ef52319ffe52f8c054a496d4e3fa4

third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h

 // 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 DisplayItemClient_h
 #define DisplayItemClient_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/PaintInvalidationReason.h"
@@ skipping 23 matching lines @@
     void beginShouldKeepAlive(const void* owner) const;
 
     // Called when the DisplayItemClient is sure that it can safely die before its owners
     // have chance to remove it from the aliveness control.
     void endShouldKeepAlive() const;
 
     // Clears all should-keep-alive DisplayItemClients of a PaintController. Called after
     // PaintController commits new display items or the subsequence owner is invalidated.
     static void endShouldKeepAliveAllClients(const void* owner);
     static void endShouldKeepAliveAllClients();
+#else
+    virtual ~DisplayItemClient() { }
 #endif
 
     virtual String debugName() const = 0;
 
     // The visual rect of this DisplayItemClient, in object space of the object that owns the GraphicsLayer, i.e.
     // offset by offsetFromLayoutObjectWithSubpixelAccumulation().
     virtual LayoutRect visualRect() const = 0;
 
     void setDisplayItemsUncached(PaintInvalidationReason reason = PaintInvalidationFull) const
     {
@@ skipping 64 matching lines @@
 
     mutable CacheGenerationOrInvalidationReason m_cacheGenerationOrInvalidationReason;
 };
 
 inline bool operator==(const DisplayItemClient& client1, const DisplayItemClient& client2) { return &client1 == &client2; }
 inline bool operator!=(const DisplayItemClient& client1, const DisplayItemClient& client2) { return &client1 != &client2; }
 
 } // namespace blink
 
 #endif // DisplayItemClient_h