Add "Don't translate" preference to chrome://settings/languages

chrome/browser/resources/options/language_options.html

 <div id="languagePage" class="page" hidden>
   <div class="close-button"></div>
   <h1 i18n-content="languagePage"></h1>
   <div class="content-area">
     <div id="notification">
       <span>&nbsp;</span>
       <span class="link"><span class="link-color"></span></span>
     </div>
     <div class="language-options-header">
       <div i18n-content="addLanguageInstructions"></div>
 <if expr="pp_ifdef('chromeos')">
       <div i18n-content="inputMethodInstructions"></div>
 </if>
     </div>
     <div class="language-options">
       <div class="language-options-left">
         <h3 i18n-content="languages"></h3>
         <list id="language-options-list"></list>
         <div class="language-options-lower-left">
           <button id="language-options-add-button"
             i18n-content="addButton">
           </button>
         </div>
         <div id="language-options-list-dropmarker"></div>
       </div>
-<!-- Chrome uses the native OS spellchecker in OS X, so don't display the
-     dictionary pane. -->
-<if expr="not is_macosx">
       <div class="language-options-right">
         <h3 id="language-options-language-name"></h3>
 <if expr="os == 'win32' or pp_ifdef('chromeos')">
         <div class="language-options-contents">
           <button id="language-options-ui-language-button"
               i18n-content="displayInThisLanguage">
           </button>
           <span id="language-options-ui-language-message" hidden></span>
         </div>
 </if>
+<!-- Chrome uses the native OS spellchecker in OS X, so don't display the
+     dictionary pane. -->
+<if expr="not is_macosx">
         <div id="language-options-spellcheck" class="language-options-contents">
           <button id="language-options-spell-check-language-button"
               i18n-content="useThisForSpellChecking">
           </button>
           <span id="language-options-spell-check-language-message" hidden>
           </span>
           <span id="language-options-dictionary-downloading-message"
               i18n-content="downloadingDictionary" hidden>
           </span>
         </div>
         <div id="language-options-dictionary-download-failed-message"
             class="language-options-notification" hidden>
           <div i18n-content="downloadFailed"></div>
           <div id="language-options-dictionary-download-fail-help-message"
-            i18n-content="downloadFailHelp" hidden>
+              i18n-content="downloadFailHelp" hidden>
           </div>
           <button id="dictionary-download-retry-button"
               i18n-content="retryButton">
           </button>
         </div>
         <div id="language-options-ui-notification-bar"
-             class="language-options-notification" hidden>
+            class="language-options-notification" hidden>
           <div i18n-content="restartRequired"></div>
 <if expr="pp_ifdef('chromeos')">
           <button id="language-options-ui-restart-button"
-                  i18n-content="restartButton">
+              i18n-content="restartButton">
           </button>
 </if>
         </div>
+</if>
+        <div id="language-options-dont-translate"
+            class="language-options-contents">
+          <div class="checkbox">
+            <label>
+              <input type="checkbox" id="dont-translate-in-this-language">
+              <span class="dont-translate-label"
+                  i18n-content="dontTranslateInThisLanguage"></span>
+            </label>
+          </div>
+        </div>
 <if expr="pp_ifdef('chromeos')">
         <h3 i18n-content="inputMethod"></h3>
         <div id="language-options-input-method-template" class="input-method"
             hidden>
           <div class="checkbox">
             <label>
               <input type="checkbox">
               <span class="input-method-label"></span>
             </label>
           </div>
         </div>
         <div id="language-options-input-method-list"
              class="language-options-contents">
           <span id="language-options-input-method-none"
               i18n-content="noInputMethods" hidden>
           </span>
         </div>
 </if>
       </div>
-</if>
     </div>
     <div class="language-options-footer">
 <if expr="pp_ifdef('chromeos')">
       <div i18n-content="switchInputMethodsHint"></div>
       <div i18n-content="selectPreviousInputMethodHint"></div>
       <button id="edit-dictionary-button"
           class="link-button standalone-link-button"
           i18n-content="languageDictionaryOverlayTitle"></button>
 </if>
 <if expr="not pp_ifdef('chromeos') and not is_macosx">
@@ skipping 16 matching lines @@
       </div>
 </if>
     </div>
   </div>
   <div class="action-area">
     <div class="button-strip">
       <button id="language-confirm" i18n-content="done"></button>
     </div>
   </div>
 </div>