Avoid creating duplicate Range objects when handling misspellings.

third_party/WebKit/Source/core/editing/spellcheck/SpellCheckRequester.h

 /*
  * Copyright (C) 2010 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SpellCheckRequester_h
 #define SpellCheckRequester_h
 
 #include "core/dom/Element.h"
 #include "core/dom/Range.h"
+#include "core/editing/EphemeralRange.h"
 #include "platform/Timer.h"
 #include "platform/text/TextChecking.h"
 #include "wtf/Deque.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class LocalFrame;
 class SpellCheckRequester;
 class TextCheckerClient;
 
 class SpellCheckRequest final : public TextCheckingRequest {
 public:
-    static PassRefPtrWillBeRawPtr<SpellCheckRequest> create(TextCheckingTypeMask, TextCheckingProcessType, PassRefPtrWillBeRawPtr<Range> checkingRange, PassRefPtrWillBeRawPtr<Range> paragraphRange, int requestNumber = 0);
+    static PassRefPtrWillBeRawPtr<SpellCheckRequest> create(TextCheckingTypeMask, TextCheckingProcessType, const EphemeralRange& checkingRange, const EphemeralRange& paragraphRange, int requestNumber = 0);
+
     ~SpellCheckRequest() override;
+    void dispose();
 
     PassRefPtrWillBeRawPtr<Range> checkingRange() const { return m_checkingRange; }
     PassRefPtrWillBeRawPtr<Range> paragraphRange() const { return m_paragraphRange; }
     PassRefPtrWillBeRawPtr<Element> rootEditableElement() const { return m_rootEditableElement; }
 
     void setCheckerAndSequence(SpellCheckRequester*, int sequence);
 #if !ENABLE(OILPAN)
     void requesterDestroyed();
 #endif
 
@@ skipping 73 matching lines @@
 
     RefPtrWillBeMember<SpellCheckRequest> m_processingRequest;
 
     typedef WillBeHeapDeque<RefPtrWillBeMember<SpellCheckRequest>> RequestQueue;
     RequestQueue m_requestQueue;
 };
 
 } // namespace blink
 
 #endif // SpellCheckRequester_h