Prefix string16 with base:: in ui/.

ui/views/controls/button/button.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 UI_VIEWS_CONTROLS_BUTTON_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_BUTTON_H_
 
 #include "ui/views/view.h"
 
 namespace views {
@@ skipping 28 matching lines @@
 
   // Button styles with associated images and border painters.
   // TODO(msw): Add Menu, ComboBox, etc.
   enum ButtonStyle {
     STYLE_BUTTON = 0,
     STYLE_TEXTBUTTON,
     STYLE_NATIVE_TEXTBUTTON,
     STYLE_COUNT,
   };
 
-  void SetTooltipText(const string16& tooltip_text);
+  void SetTooltipText(const base::string16& tooltip_text);
 
   int tag() const { return tag_; }
   void set_tag(int tag) { tag_ = tag; }
 
-  void SetAccessibleName(const string16& name);
+  void SetAccessibleName(const base::string16& name);
 
   // Overridden from View:
   virtual bool GetTooltipText(const gfx::Point& p,
-                              string16* tooltip) const OVERRIDE;
+                              base::string16* tooltip) const OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
 
  protected:
   // Construct the Button with a Listener. The listener can be NULL. This can be
   // true of buttons that don't have a listener - e.g. menubuttons where there's
   // no default action and checkboxes.
   explicit Button(ButtonListener* listener);
 
   // Cause the button to notify the listener that a click occurred.
   virtual void NotifyClick(const ui::Event& event);
 
   // The button's listener. Notified when clicked.
   ButtonListener* listener_;
 
  private:
   // The text shown in a tooltip.
-  string16 tooltip_text_;
+  base::string16 tooltip_text_;
 
   // Accessibility data.
-  string16 accessible_name_;
+  base::string16 accessible_name_;
 
   // The id tag associated with this button. Used to disambiguate buttons in
   // the ButtonListener implementation.
   int tag_;
 
   DISALLOW_COPY_AND_ASSIGN(Button);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_BUTTON_H_