AX: remove unused AXObject::selectedText.

This CL removes the followings:
 - AXObject::selectedText
 - AXRenderObject::selectedText, which is an override of AXObject::selectedText
 - AXRenderObject::stringForRange and HTMLTextFormControlElement::selectedText,
   which are used only by AXRenderObject::selectedText.

BUG=none
TEST=none; no behavior changes

Review URL: https://codereview.chromium.org/137783006

git-svn-id: svn://svn.chromium.org/blink/trunk@165113 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/accessibility/AXObject.h

@@ -514,7 +514,6 @@ public:
 
     // Selected text.
     virtual PlainTextRange selectedTextRange() const { return PlainTextRange(); }
-    virtual String selectedText() const { return String(); }
 
     // Modify or take an action on an object.
     virtual void increment() { }

third_party/WebKit/Source/core/accessibility/AXRenderObject.cpp

@@ -1571,24 +1571,6 @@ VisibleSelection AXRenderObject::selection() const
     return m_renderer->frame()->selection().selection();
 }
 
-String AXRenderObject::selectedText() const
-{
-    ASSERT(isTextControl());
-
-    if (isPasswordField())
-        return String(); // need to return something distinct from empty string
-
-    if (isNativeTextControl() && m_renderer->isTextControl()) {
-        HTMLTextFormControlElement* textControl = toRenderTextControl(m_renderer)->textFormControlElement();
-        return textControl->selectedText();
-    }
-
-    if (ariaRoleAttribute() == UnknownRole)
-        return String();
-
-    return stringForRange(ariaSelectedTextRange());
-}
-
 //
 // Modify or take an action on an object.
 //
@@ -1804,23 +1786,6 @@ void AXRenderObject::lineBreaks(Vector<int>& lineBreaks) const
     }
 }
 
-// A substring of the text associated with this accessibility object that is
-// specified by the given character range.
-String AXRenderObject::stringForRange(const PlainTextRange& range) const
-{
-    if (!range.length)
-        return String();
-
-    if (!isTextControl())
-        return String();
-
-    String elementText = isPasswordField() ? String() : text();
-    if (range.start + range.length > elementText.length())
-        return String();
-
-    return elementText.substring(range.start, range.length);
-}
-
 //
 // Private.
 //

third_party/WebKit/Source/core/accessibility/AXRenderObject.h

@@ -181,7 +181,6 @@ protected:
 
     // Selected text.
     virtual PlainTextRange selectedTextRange() const OVERRIDE;
-    virtual String selectedText() const OVERRIDE;
 
     // Modify or take an action on an object.
     virtual void setSelectedTextRange(const PlainTextRange&) OVERRIDE;
@@ -227,7 +226,6 @@ private:
     bool inheritsPresentationalRole() const;
     LayoutRect computeElementRect() const;
     VisibleSelection selection() const;
-    String stringForRange(const PlainTextRange&) const;
     int indexForVisiblePosition(const VisiblePosition&) const;
 };
 

third_party/WebKit/Source/core/html/HTMLTextFormControlElement.cpp

@@ -182,13 +182,6 @@ void HTMLTextFormControlElement::select()
     setSelectionRange(0, numeric_limits<int>::max(), SelectionHasNoDirection);
 }
 
-String HTMLTextFormControlElement::selectedText() const
-{
-    if (!isTextFormControl())
-        return String();
-    return value().substring(selectionStart(), selectionEnd() - selectionStart());
-}
-
 void HTMLTextFormControlElement::dispatchFormControlChangeEvent()
 {
     if (m_textAsOfLastFormControlChangeEvent != value()) {

third_party/WebKit/Source/core/html/HTMLTextFormControlElement.h

@@ -70,7 +70,6 @@ public:
     void setSelectionRange(int start, int end, const String& direction);
     void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection);
     PassRefPtr<Range> selection() const;
-    String selectedText() const;
 
     virtual void dispatchFormControlChangeEvent() OVERRIDE FINAL;