Move LayerHitTestRects to a separate file.

third_party/WebKit/Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 21 matching lines @@
 #include "core/dom/DocumentLifecycle.h"
 #include "core/editing/PositionWithAffinity.h"
 #include "core/fetch/ImageResourceObserver.h"
 #include "core/layout/LayoutObjectChildList.h"
 #include "core/layout/PaintInvalidationState.h"
 #include "core/layout/ScrollAlignment.h"
 #include "core/layout/SubtreeLayoutScope.h"
 #include "core/layout/api/HitTestAction.h"
 #include "core/layout/api/SelectionState.h"
 #include "core/layout/compositing/CompositingState.h"
+#include "core/paint/LayerHitTestRects.h"
 #include "core/paint/PaintPhase.h"
 #include "core/style/ComputedStyle.h"
 #include "platform/geometry/FloatQuad.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/CompositingReasons.h"
 #include "platform/graphics/PaintInvalidationReason.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "wtf/AutoReset.h"
 
@@ skipping 56 matching lines @@
 struct AnnotatedRegionValue {
   DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
   bool operator==(const AnnotatedRegionValue& o) const {
     return draggable == o.draggable && bounds == o.bounds;
   }
 
   LayoutRect bounds;
   bool draggable;
 };
 
-typedef WTF::HashMap<const PaintLayer*, Vector<LayoutRect>> LayerHitTestRects;
-
 #ifndef NDEBUG
 const int showTreeCharacterOffset = 39;
 #endif
 
 // LayoutObject is the base class for all layout tree objects.
 //
 // LayoutObjects form a tree structure that is a close mapping of the DOM tree.
 // The root of the LayoutObject tree is the LayoutView, which is the
 // LayoutObject associated with the Document.
 //
@@ skipping 2466 matching lines @@
 CORE_EXPORT void showLineTree(const blink::LayoutObject*);
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1,
                                 const blink::LayoutObject* object2);
 
 #endif
 
 #endif  // LayoutObject_h