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

ui/events/ozone/evdev/libgestures_glue/gesture_property_provider.cc

 // Copyright 2014 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/events/ozone/evdev/libgestures_glue/gesture_property_provider.h"
 
 #include <fnmatch.h>
 #include <gestures/gestures.h>
 #include <libevdev/libevdev.h>
 #include <stdint.h>
@@ skipping 1060 matching lines @@
         std::string piece(pieces.token());
 
         // Skip empty pieces.
         if (piece.empty())
           continue;
 
         // See if we are currently parsing an entry or are still looking for
         // one.
         if (is_parsing) {
           // Stop parsing the current line if the format is wrong.
-          if (piece.size() <= 2 || piece[0] != '\"' ||
-              piece[piece.size() - 1] != '\"') {
+          if (piece.size() <= 2 || piece[0] != '\"' || piece.back() != '\"') {
             LOG(ERROR) << "Error parsing line: " << lines.token();
             has_error = true;
             if (next_is_section_type)
               is_input_class_section = false;
             break;
           }
 
           // Parse the arguments. Note that we don't break even if a whitespace
           // string is passed. It will just be handled in various ways based on
           // the entry type.
@@ skipping 453 matching lines @@
 const GesturesPropProvider kGesturePropProvider = {
     GesturesPropFunctionsWrapper::CreateInt,
     GesturesPropFunctionsWrapper::CreateShort,
     GesturesPropFunctionsWrapper::CreateBool,
     GesturesPropFunctionsWrapper::CreateString,
     GesturesPropFunctionsWrapper::CreateReal,
     GesturesPropFunctionsWrapper::RegisterHandlers,
     GesturesPropFunctionsWrapper::Free};
 
 }  // namespace ui