Fix some string16 -> base::string16 that have crept into ui/.

ui/views/controls/label.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/controls/label.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <vector>
@@ skipping 215 matching lines @@
   gfx::Insets insets = GetInsets();
   size.Enlarge(insets.width(), insets.height());
   return size;
 }
 
 gfx::Size Label::GetMinimumSize() {
   gfx::Size text_size(GetTextSize());
   if ((!visible() && collapse_when_hidden_) || text_size.IsEmpty())
     return gfx::Size();
 
-  gfx::Size size(font_list_.GetStringWidth(string16(gfx::kEllipsisUTF16)),
+  gfx::Size size(font_list_.GetStringWidth(base::string16(gfx::kEllipsisUTF16)),
                  font_list_.GetHeight());
   size.SetToMin(text_size);  // The actual text may be shorter than an ellipsis.
   gfx::Insets insets = GetInsets();
   size.Enlarge(insets.width(), insets.height());
   return size;
 }
 
 int Label::GetHeightForWidth(int w) {
   if (!is_multi_line_)
     return View::GetHeightForWidth(w);
@@ skipping 290 matching lines @@
   for (int i = 0; i < kCachedSizeLimit; ++i)
     cached_heights_[i] = gfx::Size();
 }
 
 bool Label::ShouldShowDefaultTooltip() const {
   return !is_multi_line_ &&
       gfx::GetStringWidth(text_, font_list_) > GetAvailableRect().width();
 }
 
 }  // namespace views