Remove PlatformMouseEvent and use WebMouseEvent instead

third_party/WebKit/Source/core/page/EventWithHitTestResults.h

Index: third_party/WebKit/Source/core/page/EventWithHitTestResults.h
diff --git a/third_party/WebKit/Source/core/page/EventWithHitTestResults.h b/third_party/WebKit/Source/core/page/EventWithHitTestResults.h
index 9d0bdb7b5c451309d9fb44134c548cb18407bf0f..b8292558340782515805c0ccce21093591d31cc8 100644
--- a/third_party/WebKit/Source/core/page/EventWithHitTestResults.h
+++ b/third_party/WebKit/Source/core/page/EventWithHitTestResults.h
@@ -23,8 +23,8 @@
 
 #include "core/layout/HitTestResult.h"
 #include "platform/PlatformEvent.h"
-#include "platform/PlatformMouseEvent.h"
 #include "public/platform/WebGestureEvent.h"
+#include "public/platform/WebMouseEvent.h"
 
 namespace blink {
 
@@ -46,14 +46,16 @@ class EventWithHitTestResults {
   bool isOverLink() const { return m_hitTestResult.isOverLink(); }
   bool isOverWidget() const { return m_hitTestResult.isOverWidget(); }
   Node* innerNode() const { return m_hitTestResult.innerNode(); }
+  const String& canvasRegionId() const {
+    return m_hitTestResult.canvasRegionId();
+  }
 
  private:
   EventType m_event;
   HitTestResult m_hitTestResult;
 };
 
-using MouseEventWithHitTestResults =
-    EventWithHitTestResults<PlatformMouseEvent>;
+using MouseEventWithHitTestResults = EventWithHitTestResults<WebMouseEvent>;
 
 using GestureEventWithHitTestResults = EventWithHitTestResults<WebGestureEvent>;