Add FullscreenController::ToggleFullscreenModeWithExtension

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 14784 matching lines @@
       </message>
       <message name="IDS_ENTERPRISE_ENROLLMENT_CANCEL_AUTO_GO_BACK" desc="Text on the button that goes back to enrollment from the confirmation dialog.">
         Back
       </message>
     </if>
 
     <!-- Fullscreen Strings -->
     <message name="IDS_FULLSCREEN_USER_ENTERED_FULLSCREEN" desc="Message for the user telling them that they have entered fullscreen mode.">
       You have gone full screen.
     </message>
+    <message name="IDS_FULLSCREEN_EXTENSION_TRIGGERED_FULLSCREEN" desc="Message for the user telling them that an extension triggered fullscreen mode.">
+      <ph name="EXTENSION_NAME">$1<ex>MyExtension</ex></ph> triggered full screen.
+    </message>
     <message name="IDS_FULLSCREEN_SITE_ENTERED_FULLSCREEN" desc="Text displayed in the bubble when a page has gone fullscreen. (With a domain URL to display)">
       <ph name="FULLSCREEN_ORIGIN">$1<ex>google.com</ex></ph> is now full screen.
     </message>
     <message name="IDS_FULLSCREEN_ENTERED_FULLSCREEN" desc="Text displayed in the bubble when a page has gone fullscreen. (No domain to be shown, e.g. from filesystem page)">
       This page is now full screen.
     </message>
     <message name="IDS_FULLSCREEN_SITE_REQUEST_FULLSCREEN_MOUSELOCK" desc="Text displayed in the bubble that requests permission for staying in fullscreen mode and locking the mouse. (With a domain URL to display)">
       <ph name="FULLSCREEN_ORIGIN">$1<ex>google.com</ex></ph> is now full screen and wants to disable your mouse cursor.
     </message>
     <message name="IDS_FULLSCREEN_REQUEST_FULLSCREEN_MOUSELOCK" desc="Text displayed in the bubble that requests permission for staying in fullscreen mode and locking the mouse. (No domain to be shown, e.g. from filesystem page)">
@@ skipping 271 matching lines @@
     </messages>
     <structures fallback_to_english="true">
       <!-- Make sure these stay in sync with the structures in generated_resources.grd. -->
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
   </release>
 </grit>