Reland: Fix setComposingText with empty text when newCursorPosition != 1

third_party/WebKit/Source/core/editing/InputMethodController.h

 /*
  * Copyright (C) 2006, 2007, 2008 Apple 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 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef InputMethodController_h
 #define InputMethodController_h
 
 #include "core/CoreExport.h"
 #include "core/dom/Range.h"
 #include "core/editing/CompositionUnderline.h"
 #include "core/editing/EphemeralRange.h"
+#include "core/editing/FrameSelection.h"
 #include "core/editing/PlainTextRange.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class Editor;
 class LocalFrame;
 class Range;
 class Text;
@@ skipping 26 matching lines @@
     void cancelComposition();
     void cancelCompositionIfSelectionIsInvalid();
     EphemeralRange compositionEphemeralRange() const;
     Range* compositionRange() const;
 
     void clear();
     void documentDetached();
 
     PlainTextRange getSelectionOffsets() const;
     // Returns true if setting selection to specified offsets, otherwise false.
-    bool setEditableSelectionOffsets(const PlainTextRange&);
+    bool setEditableSelectionOffsets(const PlainTextRange&, FrameSelection::SetSelectionOptions = FrameSelection::CloseTyping);
     void extendSelectionAndDelete(int before, int after);
+    PlainTextRange createRangeForSelection(int start, int end, size_t textLength) const;
 
 private:
     class SelectionOffsetsScope {
         WTF_MAKE_NONCOPYABLE(SelectionOffsetsScope);
         STACK_ALLOCATED();
     public:
         explicit SelectionOffsetsScope(InputMethodController*);
         ~SelectionOffsetsScope();
     private:
         Member<InputMethodController> m_inputMethodController;
@@ skipping 10 matching lines @@
 
     Editor& editor() const;
     LocalFrame& frame() const
     {
         DCHECK(m_frame);
         return *m_frame;
     }
 
     String composingText() const;
     void selectComposition() const;
-    bool setSelectionOffsets(const PlainTextRange&);
+    bool setSelectionOffsets(const PlainTextRange&, FrameSelection::SetSelectionOptions = FrameSelection::CloseTyping);
 };
 
 } // namespace blink
 
 #endif // InputMethodController_h