Prefix string16 with base:: in ui/.

ui/views/widget/native_widget_aura.cc

 // Copyright (c) 2012 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.
 
 #include "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_client.h"
@@ skipping 327 matching lines @@
 
 void NativeWidgetAura::GetWindowPlacement(
     gfx::Rect* bounds,
     ui::WindowShowState* show_state) const {
   // The interface specifies returning restored bounds, not current bounds.
   *bounds = GetRestoredBounds();
   *show_state = window_ ? window_->GetProperty(aura::client::kShowStateKey) :
       ui::SHOW_STATE_DEFAULT;
 }
 
-bool NativeWidgetAura::SetWindowTitle(const string16& title) {
+bool NativeWidgetAura::SetWindowTitle(const base::string16& title) {
   if (!window_)
     return false;
   if (window_->title() == title)
     return false;
   window_->set_title(title);
   return true;
 }
 
 void NativeWidgetAura::SetWindowIcons(const gfx::ImageSkia& window_icon,
                                       const gfx::ImageSkia& app_icon) {
@@ skipping 784 matching lines @@
   return aura::Env::GetInstance()->IsMouseButtonDown();
 }
 
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   return aura::Env::GetInstance()->is_touch_down();
 }
 
 }  // namespace internal
 }  // namespace views