Use container::back() and container::pop_back() in ui/

ui/views/controls/textfield/textfield_model.cc

Index: ui/views/controls/textfield/textfield_model.cc
diff --git a/ui/views/controls/textfield/textfield_model.cc b/ui/views/controls/textfield/textfield_model.cc
index 297ea1978cb84132388d102cbef5833fa8ade271..188747866fc2dc0ca4cc37480e129dd4252c3854 100644
--- a/ui/views/controls/textfield/textfield_model.cc
+++ b/ui/views/controls/textfield/textfield_model.cc
@@ -441,7 +441,7 @@ bool TextfieldModel::CanUndo() {
 }
 
 bool TextfieldModel::CanRedo() {
-  if (!edit_history_.size())
+  if (edit_history_.empty())
     return false;
   // There is no redo iff the current edit is the last element in the history.
   EditHistory::iterator iter = current_edit_;
@@ -478,7 +478,7 @@ bool TextfieldModel::Redo() {
   if (current_edit_ == edit_history_.end())
     current_edit_ = edit_history_.begin();
   else
-    current_edit_ ++;

[Nico, 2016/07/13 16:23:27]

O_o

+    current_edit_++;
   base::string16 old = text();
   size_t old_cursor = GetCursorPosition();
   (*current_edit_)->Redo(this);