DOM: Reduce the size of event_path.h

This CL reduces pre-processed size of event_path.h by 3.29MB.

Bug: 242216
Change-Id: I96fbd9d53158529243ff6a1b2e807058fb05430e
Reviewed-on: https://chromium-review.googlesource.com/1189517Reviewed-by: Hayato Ito <hayato@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586214}

third_party/blink/renderer/core/dom/events/event.cc

@@ -25,6 +25,7 @@
 #include "third_party/blink/renderer/core/dom/events/event_dispatcher.h"
 #include "third_party/blink/renderer/core/dom/events/event_path.h"
 #include "third_party/blink/renderer/core/dom/events/event_target.h"
+#include "third_party/blink/renderer/core/dom/events/window_event_context.h"
 #include "third_party/blink/renderer/core/dom/static_node_list.h"
 #include "third_party/blink/renderer/core/events/focus_event.h"
 #include "third_party/blink/renderer/core/events/mouse_event.h"

third_party/blink/renderer/core/dom/events/event_path.cc

@@ -27,6 +27,7 @@
 #include "third_party/blink/renderer/core/dom/events/event_path.h"
 
 #include "third_party/blink/renderer/core/dom/document.h"
+#include "third_party/blink/renderer/core/dom/events/window_event_context.h"
 #include "third_party/blink/renderer/core/dom/shadow_root.h"
 #include "third_party/blink/renderer/core/dom/v0_insertion_point.h"
 #include "third_party/blink/renderer/core/event_names.h"

third_party/blink/renderer/core/dom/events/event_path.h

@@ -31,10 +31,7 @@
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/core/dom/events/node_event_context.h"
 #include "third_party/blink/renderer/core/dom/events/tree_scope_event_context.h"
-#include "third_party/blink/renderer/core/dom/events/window_event_context.h"
 #include "third_party/blink/renderer/platform/heap/handle.h"
-#include "third_party/blink/renderer/platform/wtf/hash_map.h"
-#include "third_party/blink/renderer/platform/wtf/vector.h"
 
 namespace blink {
 
@@ -44,6 +41,7 @@ class Node;
 class TouchEvent;
 class TouchList;
 class TreeScope;
+class WindowEventContext;
 
 class CORE_EXPORT EventPath final
     : public GarbageCollectedFinalized<EventPath> {

third_party/blink/renderer/core/dom/events/tree_scope_event_context.cc

@@ -27,6 +27,7 @@
 #include "third_party/blink/renderer/core/dom/events/tree_scope_event_context.h"
 
 #include "third_party/blink/renderer/core/dom/events/event_path.h"
+#include "third_party/blink/renderer/core/dom/events/window_event_context.h"
 #include "third_party/blink/renderer/core/dom/shadow_root.h"
 #include "third_party/blink/renderer/core/dom/static_node_list.h"
 #include "third_party/blink/renderer/core/events/touch_event_context.h"