An edit for SetText needs to be merged with previous edit for omnibox.

views/controls/textfield/native_textfield_gtk.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_GTK_H_
 #define VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 43 matching lines @@
   virtual size_t GetCursorPosition() const OVERRIDE;
   virtual bool HandleKeyPressed(const views::KeyEvent& e) OVERRIDE;
   virtual bool HandleKeyReleased(const views::KeyEvent& e) OVERRIDE;
   virtual void HandleFocus() OVERRIDE;
   virtual void HandleBlur() OVERRIDE;
   virtual TextInputClient* GetTextInputClient() OVERRIDE;
   virtual TextStyle* CreateTextStyle() OVERRIDE;
   virtual void ApplyTextStyle(const TextStyle* style,
                               const ui::Range& range) OVERRIDE;
   virtual void ClearAllTextStyles() OVERRIDE;
+  virtual void ClearEditHistory() OVERRIDE;
 
   // Overridden from NativeControlGtk:
   virtual void CreateNativeControl() OVERRIDE;
   virtual void NativeControlCreated(GtkWidget* widget) OVERRIDE;
 
   // Returns true if the textfield is for password.
   bool IsPassword();
 
  private:
   // Gtk signal callbacks.
@@ skipping 17 matching lines @@
   // The actual paste clipboard action might be performed later if the
   // clipboard is not empty.
   bool paste_clipboard_requested_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTextfieldGtk);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_GTK_H_