Componentization: make core classes visible for blink_tests and blink_web.

Source/core/events/EventPath.h

 /*
  * Copyright (C) 2013 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:
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  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 #ifndef EventPath_h
 #define EventPath_h
 
+#include "core/CoreExport.h"
 #include "core/events/NodeEventContext.h"
 #include "core/events/TreeScopeEventContext.h"
 #include "core/events/WindowEventContext.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class Event;
 class EventTarget;
 class Node;
 class TouchEvent;
 class TouchList;
 class TreeScope;
 
-class EventPath final : public NoBaseWillBeGarbageCollectedFinalized<EventPath> {
+class CORE_EXPORT EventPath final : public NoBaseWillBeGarbageCollectedFinalized<EventPath> {
 public:
     explicit EventPath(Node&, Event* = nullptr);
 
     void initializeWith(Node&, Event*);
 
     NodeEventContext& operator[](size_t index) { return m_nodeEventContexts[index]; }
     const NodeEventContext& operator[](size_t index) const { return m_nodeEventContexts[index]; }
     NodeEventContext& at(size_t index) { return m_nodeEventContexts[index]; }
     NodeEventContext& last() { return m_nodeEventContexts[size() - 1]; }
 
@@ skipping 45 matching lines @@
     WillBeHeapVector<NodeEventContext> m_nodeEventContexts;
     RawPtrWillBeMember<Node> m_node;
     RawPtrWillBeMember<Event> m_event;
     WillBeHeapVector<RefPtrWillBeMember<TreeScopeEventContext>> m_treeScopeEventContexts;
     OwnPtrWillBeMember<WindowEventContext> m_windowEventContext;
 };
 
 } // namespace
 
 #endif