Select All present even all selectable text has been selected

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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
@@ skipping 127 matching lines @@
                     HandleVisibility = HandleVisibility::NotVisible,
                     SetSelectionOptions = CloseTyping | ClearTypingStyle,
                     CursorAlignOnScroll = CursorAlignOnScroll::IfNeeded,
                     TextGranularity = CharacterGranularity);
   bool setSelectedRange(
       const EphemeralRange&,
       TextAffinity,
       SelectionDirectionalMode = SelectionDirectionalMode::NonDirectional,
       FrameSelection::SetSelectionOptions = CloseTyping | ClearTypingStyle);
   void selectAll();
+  bool canSelectAll();
   void clear();
 
   // TODO(tkent): These two functions were added to fix crbug.com/695211 without
   // changing focus behavior. Once we fix crbug.com/690272, we can remove these
   // functions.
   // setSelectionDeprecated() returns true if didSetSelectionDeprecated() should
   // be called.
   bool setSelectionDeprecated(const SelectionInDOMTree&,
                               SetSelectionOptions = CloseTyping |
                                                     ClearTypingStyle,
@@ skipping 147 matching lines @@
 
   void setUseSecureKeyboardEntry(bool);
 
   void updateSelectionIfNeeded(const Position& base,
                                const Position& extent,
                                const Position& start,
                                const Position& end);
 
   GranularityStrategy* granularityStrategy();
 
+  Node* selectAllRoot();
+
   // Implementation of |SynchronousMutationObserver| member functions.
   void contextDestroyed(Document*) final;
   void nodeChildrenWillBeRemoved(ContainerNode&) final;
   void nodeWillBeRemoved(Node&) final;
 
   Member<LocalFrame> m_frame;
   const Member<PendingSelection> m_pendingSelection;
   const Member<SelectionEditor> m_selectionEditor;
 
   TextGranularity m_granularity;
@@ skipping 11 matching lines @@
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::FrameSelection&);
 void showTree(const blink::FrameSelection*);
 #endif
 
 #endif  // FrameSelection_h