View difference between Paste ID: 0BYBF0SF and

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+<?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
  <class>MainWindow</class>
  <widget class="QMainWindow" name="MainWindow">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>802</width>
     <height>753</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>PyQt4 : Simple Browser</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout_3">
     <item row="0" column="0" colspan="2">
      <widget class="QWidget" name="widget" native="true">
       <property name="sizePolicy">
        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
         <horstretch>0</horstretch>
         <verstretch>0</verstretch>
        </sizepolicy>
       </property>
       <layout class="QHBoxLayout" name="horizontalLayout">
        <item>
         <layout class="QHBoxLayout" name="horizontalLayout_2">
          <item>
           <widget class="QPushButton" name="back_button">
            <property name="text">
             <string>Back</string>
            </property>
           </widget>
          </item>
          <item>
           <widget class="QPushButton" name="forward_button">
            <property name="text">
             <string>Forward</string>
            </property>
           </widget>
          </item>
          <item>
           <widget class="QLineEdit" name="address_bar"/>
          </item>
          <item>
           <widget class="QPushButton" name="take_screenshot_button">
            <property name="text">
             <string>SHOOT!</string>
            </property>
           </widget>
          </item>
         </layout>
        </item>
       </layout>
      </widget>
     </item>
     <item row="1" column="0" colspan="2">
      <widget class="QWebView" name="webView">
       <property name="url">
        <url>
         <string>about:blank</string>
        </url>
       </property>
      </widget>
     </item>
    </layout>
   </widget>
   <widget class="QMenuBar" name="menubar">
    <property name="geometry">
     <rect>
      <x>0</x>
      <y>0</y>
      <width>802</width>
      <height>19</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
     <property name="title">
      <string>File</string>
     </property>
     <addaction name="actionQuit"/>
    </widget>
    <addaction name="menuFile"/>
   </widget>
   <widget class="QStatusBar" name="statusbar"/>
   <action name="actionQuit">
    <property name="text">
     <string>Quit</string>
    </property>
   </action>
  </widget>
  <customwidgets>
   <customwidget>
    <class>QWebView</class>
    <extends>QWidget</extends>
    <header>QtWebKit/QWebView</header>
   </customwidget>
  </customwidgets>
  <resources/>
  <connections/>
 </ui>