Prefix string16 with base:: in ui/.

ui/views/corewm/tooltip_controller.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/corewm/tooltip_controller.h"
 
 #include <vector>
 
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
@@ skipping 249 matching lines @@
 }
 
 void TooltipController::UpdateIfRequired() {
   if (!tooltips_enabled_ ||
       aura::Env::GetInstance()->IsMouseButtonDown() ||
       IsDragDropInProgress() || !IsCursorVisible()) {
     tooltip_->Hide();
     return;
   }
 
-  string16 tooltip_text;
+  base::string16 tooltip_text;
   if (tooltip_window_)
     tooltip_text = aura::client::GetTooltipText(tooltip_window_);
 
   // If the user pressed a mouse button. We will hide the tooltip and not show
   // it until there is a change in the tooltip.
   if (tooltip_window_at_mouse_press_) {
     if (tooltip_window_ == tooltip_window_at_mouse_press_ &&
         tooltip_text == tooltip_text_at_mouse_press_) {
       tooltip_->Hide();
       return;
@@ skipping 59 matching lines @@
 int TooltipController::GetTooltipShownTimeout() {
   std::map<aura::Window*, int>::const_iterator it =
       tooltip_shown_timeout_map_.find(tooltip_window_);
   if (it == tooltip_shown_timeout_map_.end())
     return kDefaultTooltipShownTimeoutMs;
   return it->second;
 }
 
 }  // namespace corewm
 }  // namespace views