Convert string16 to base::string16 in content.

content/browser/web_contents/touch_editable_impl_aura.cc

 // Copyright (c) 2013 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 "content/browser/web_contents/touch_editable_impl_aura.h"
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_widget_host.h"
@@ skipping 289 matching lines @@
   bool editable = rwhva_->GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE;
   gfx::Range selection_range;
   rwhva_->GetSelectionRange(&selection_range);
   bool has_selection = !selection_range.is_empty();
   switch (command_id) {
     case IDS_APP_CUT:
       return editable && has_selection;
     case IDS_APP_COPY:
       return has_selection;
     case IDS_APP_PASTE: {
-      string16 result;
+      base::string16 result;
       ui::Clipboard::GetForCurrentThread()->ReadText(
           ui::CLIPBOARD_TYPE_COPY_PASTE, &result);
       return editable && !result.empty();
     }
     case IDS_APP_DELETE:
       return editable && has_selection;
     case IDS_APP_SELECT_ALL:
       return true;
     default:
       return false;
@@ skipping 52 matching lines @@
     rwhva_ = NULL;
   }
   text_input_type_ = ui::TEXT_INPUT_TYPE_NONE;
   touch_selection_controller_.reset();
   handles_hidden_due_to_scroll_ = false;
   scroll_in_progress_ = false;
   overscroll_in_progress_ = false;
 }
 
 }  // namespace content