Delay instantiating InputDeviceCapabilities until accessed.

third_party/WebKit/Source/core/input/MouseEventManager.h

 // Copyright 2016 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 MouseEventManager_h
 #define MouseEventManager_h
 
 #include "core/CoreExport.h"
 #include "core/dom/SynchronousMutationObserver.h"
 #include "core/input/BoundaryEventDispatcher.h"
+#include "core/input/InputDeviceCapabilities.h"
 #include "core/page/DragActions.h"
 #include "core/page/EventWithHitTestResults.h"
 #include "platform/Timer.h"
 #include "public/platform/WebInputEventResult.h"
 #include "public/platform/WebMouseEvent.h"
 #include "wtf/Allocator.h"
 #include "wtf/Time.h"
 
 namespace blink {
 
 class ContainerNode;
 class DragState;
 class DataTransfer;
 class Element;
 class FloatQuad;
 class HitTestResult;
-class InputDeviceCapabilities;
 class LocalFrame;
 class ScrollManager;
 
 enum class DragInitiator;
 
 // This class takes care of dispatching all mouse events and keeps track of
 // positions and states of mouse.
 class CORE_EXPORT MouseEventManager final
     : public GarbageCollectedFinalized<MouseEventManager>,
       public SynchronousMutationObserver {
@@ skipping 35 matching lines @@
                           EventTarget* enteredTarget,
                           const String& canvasRegionId,
                           const WebMouseEvent&);
 
   void setNodeUnderMouse(Node*,
                          const String& canvasRegionId,
                          const WebMouseEvent&);
 
   WebInputEventResult handleMouseFocus(
       const HitTestResult&,
-      InputDeviceCapabilities* sourceCapabilities);
+      const InputDeviceCapabilitiesValue& sourceCapabilities);
 
   void fakeMouseMoveEventTimerFired(TimerBase*);
 
   void cancelFakeMouseMoveEvent();
   void dispatchFakeMouseMoveEventSoon();
   void dispatchFakeMouseMoveEventSoonInQuad(const FloatQuad&);
 
   void setLastKnownMousePosition(const WebMouseEvent&);
 
   bool handleDragDropIfPossible(const GestureEventWithHitTestResults&);
@@ skipping 135 matching lines @@
   WebMouseEvent m_mouseDown;
 
   LayoutPoint m_dragStartPos;
 
   TaskRunnerTimer<MouseEventManager> m_fakeMouseMoveEventTimer;
 };
 
 }  // namespace blink
 
 #endif  // MouseEventManager_h