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

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1163 matching lines @@
     if (!editable)
         return;
 
     VisiblePosition position = visiblePositionForViewportPoint(pointInViewport);
     frame()->selection().moveTo(position, UserTriggered);
 }
 
 bool WebLocalFrameImpl::setEditableSelectionOffsets(int start, int end)
 {
     TRACE_EVENT0("blink", "WebLocalFrameImpl::setEditableSelectionOffsets");
-    return frame()->inputMethodController().setEditableSelectionOffsets(PlainTextRange(start, end));
+    return frame()->inputMethodController().setEditableSelectionOffsets(start, end);
 }
 
 bool WebLocalFrameImpl::setCompositionFromExistingText(int compositionStart, int compositionEnd, const WebVector<WebCompositionUnderline>& underlines)
 {
     TRACE_EVENT0("blink", "WebLocalFrameImpl::setCompositionFromExistingText");
     if (!frame()->editor().canEdit())
         return false;
 
     InputMethodController& inputMethodController = frame()->inputMethodController();
     inputMethodController.cancelComposition();
@@ skipping 897 matching lines @@
         return WebSandboxFlags::None;
     return static_cast<WebSandboxFlags>(frame()->loader().effectiveSandboxFlags());
 }
 
 void WebLocalFrameImpl::forceSandboxFlags(WebSandboxFlags flags)
 {
     frame()->loader().forceSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
 } // namespace blink