Don't access DisplayItemClient::VisualRect() for cached display items.

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 35 matching lines @@
   static void EndShouldKeepAliveAllClients();
 #else
   DisplayItemClient() {}
   virtual ~DisplayItemClient() {}
 #endif
 
   virtual String DebugName() const = 0;
 
   // The visual rect of this DisplayItemClient, in the object space of the
   // object that owns the GraphicsLayer, i.e. offset by
-  // offsetFromLayoutObjectWithSubpixelAccumulation().
+  // GraphicsLayer::OffsetFromLayoutObjectWithSubpixelAccumulation().
   virtual LayoutRect VisualRect() const = 0;
 
   // This is declared here instead of in LayoutObject for verifying the
   // condition in DrawingRecorder.
   // Returns true if the object itself will not generate any effective painted
   // output no matter what size the object is. For example, this function can
   // return false for an object whose size is currently 0x0 but would have
   // effective painted output if it was set a non-empty size. It's used to skip
   // unforced paint invalidation of LayoutObjects (which is when
   // shouldDoFullPaintInvalidation is false, but mayNeedPaintInvalidation or
@@ skipping 116 matching lines @@
   return &client1 == &client2;
 }
 inline bool operator!=(const DisplayItemClient& client1,
                        const DisplayItemClient& client2) {
   return &client1 != &client2;
 }
 
 }  // namespace blink
 
 #endif  // DisplayItemClient_h