Add infobar for PPAPI broker usage.

chrome/browser/resources/options/content_settings.html

 <div id="content-settings-page" class="page" hidden>
   <div class="close-button"></div>
   <h1 i18n-content="contentSettingsPage"></h1>
   <div class="content-area">
     <!-- Cookie filter tab contents -->
     <section>
       <h3 i18n-content="cookies_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
@@ skipping 26 matching lines @@
             <input id="clear-cookies-on-exit"
                 pref="profile.clear_site_data_on_exit" type="checkbox">
             <span i18n-content="cookies_lso_clear_when_close"
                 class="clear-plugin-lso-data-enabled"></span>
             <span i18n-content="cookies_clear_when_close"
                 class="clear-plugin-lso-data-disabled"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="cookies"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
           <button id="show-cookies-button"
               i18n-content="cookies_show_cookies"></button>
           <button id="show-app-cookies-button"
               i18n-content="cookies_show_app_cookies"></button>
         </div>
      </div>
     </section>
     <!-- Image filter -->
     <section>
       <h3 i18n-content="images_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="images" value="allow">
             <span i18n-content="images_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="images" value="block">
             <span i18n-content="images_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="images"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- JavaScript filter -->
     <section>
       <h3 i18n-content="javascript_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="javascript" value="allow">
             <span i18n-content="javascript_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="javascript" value="block">
             <span i18n-content="javascript_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="javascript"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- Handlers settings -->
     <section id="handlers-section">
       <h3 i18n-content="handlers_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="handlers" value="allow"
@@ skipping 31 matching lines @@
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="plugins" value="block">
             <span i18n-content="plugins_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="plugins"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
         <div id="disable-plugins-container">
           <a href="chrome://plugins" i18n-content="disableIndividualPlugins"
               target="_blank"></a>
         </div>
       </div>
     </section>
     <!-- Pop-ups filter -->
     <section>
       <h3 i18n-content="popups_tab_label" class="content-settings-header"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="popups" value="allow">
             <span i18n-content="popups_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="popups" value="block">
             <span i18n-content="popups_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="popups"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- Location filter -->
     <section>
       <h3 i18n-content="location_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="location" value="allow">
             <span i18n-content="location_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="location" value="ask">
             <span i18n-content="location_ask"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="location" value="block">
             <span i18n-content="location_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="location"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- Notifications filter tab contents -->
     <section>
       <h3 i18n-content="notifications_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="notifications" value="allow">
             <span i18n-content="notifications_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="notifications" value="ask">
             <span i18n-content="notifications_ask"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="notifications" value="block">
             <span i18n-content="notifications_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="notifications"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- Fullscreen filter -->
     <section>
       <h3 i18n-content="fullscreen_tab_label"></h3>
       <div class="settings-row">
         <button class="exceptions-list-button" contentType="fullscreen"
-            i18n-content="manage_exceptions"></button>
+            i18n-content="manageExceptions"></button>
       </div>
     </section>
     <!-- Mouse Lock filter -->
     <section>
       <h3 i18n-content="mouselock_tab_label"></h3>
       <div>
         <div class="radio">
           <label>
             <input type="radio" name="mouselock" value="allow">
             <span i18n-content="mouselock_allow"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="mouselock" value="ask">
             <span i18n-content="mouselock_ask"></span>
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="mouselock" value="block">
             <span i18n-content="mouselock_block"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="mouselock"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
     <!-- Intent registration filter -->
     <section>
       <h3 i18n-content="webIntentsTabLabel" class="content-settings-header">
       </h3>
       <div class="checkbox">
         <label>
           <input pref="webintents.enabled" type="checkbox">
@@ skipping 13 matching lines @@
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="pepper-flash-cameramic" value="block">
             <span i18n-content="pepperFlashCameramicBlock"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button"
               contentType="pepper-flash-cameramic"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
 <if expr="pp_ifdef('chromeos')">
     <!-- Protected Content filter -->
     <section guest-visibility="disabled">
       <h3 i18n-content="protectedContentTabLabel"
           class="content-settings-header"></h3>
       <div>
         <div class="settings-row">
@@ skipping 19 matching lines @@
           </label>
         </div>
         <div class="radio">
           <label>
             <input type="radio" name="media-stream" value="block">
             <span i18n-content="mediaStreamBlock"></span>
           </label>
         </div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="media-stream"
-              i18n-content="manage_exceptions"></button>
+              i18n-content="manageExceptions"></button>
         </div>
       </div>
     </section>
+    <!-- PPAPI broker -->
+    <section>
+      <h3 i18n-content="ppapi_broker_tab_label"></h3>
+      <div>
+        <div class="radio">
+          <label>
+            <input type="radio" name="ppapi-broker" value="allow">
+            <span i18n-content="ppapi_broker_allow"></span>
+          </label>
+        </div>
+        <div class="radio">
+          <label>
+            <input type="radio" name="ppapi-broker" value="ask">
+            <span i18n-content="ppapi_broker_ask"></span>
+          </label>
+        </div>
+        <div class="radio">
+          <label>
+            <input type="radio" name="ppapi-broker" value="block">
+            <span i18n-content="ppapi_broker_block"></span>
+          </label>
+        </div>
+        <button class="exceptions-list-button" contentType="media-stream"
+            i18n-content="manageExceptions"></button>
+      </div>
+    </section>
     <section id="media-galleries-section" hidden>
       <h3 i18n-content="mediaGalleriesSectionLabel"></h3>
       <div class="settings-row">
         <button id="manage-galleries-button"
             i18n-content="manageGalleriesButton"></button>
       </div>
     </section>
   </div>
   <div class="action-area">
     <div class="button-strip">
       <button id="content-settings-overlay-confirm" i18n-content="ok"></button>
     </div>
   </div>
 </div>