Pointer Lock (was Mouse Lock) added to about:flags and passed to WebKit runtime flags

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 4857 matching lines @@
       </message>
       <message name="IDS_FLAGS_ENABLE_MEDIA_SOURCE_DESCRIPTION" desc="Description for the flag to enable the Media Source API on &lt;video&gt; elements.">
         Enable experimental Media Source API on the video elements. This API allows JavaScript to send media data directly to a video element.
       </message>
       <message name="IDS_FLAGS_AURA_WINDOWS_NAME" desc="Title for the flag to enable fancy translucent windows.">
         Translucent windows
       </message>
       <message name="IDS_FLAGS_AURA_WINDOWS_DESCRIPTION" desc="Description for the flag to enable fancy translucent windows.">
         Enable the "Aura" style for translucent window frames and constrained window dragging.
       </message>
+      <message name="IDS_FLAGS_ENABLE_POINTER_LOCK_NAME" desc="Title for the flag to enable the pointer lock feature.">
+        Enable Pointer Lock
+      </message>
+      <message name="IDS_FLAGS_ENABLE_POINTER_LOCK_DESCRIPTION" desc="Description for the flag to enable the mouse lock feature.">
+        Web pages may capture the mouse pointer and remove it from the user's control. The mouse movement data is directed solely to the web application. Users can escape by pressing the 'Esc' key.
+      </message>
       <message name="IDS_FLAGS_ENABLE_PLATFORM_APPS_NAME" desc="Title for the flag to enable platform apps.">
         Enable platform apps
       </message>
       <message name="IDS_FLAGS_ENABLE_PLATFORM_APPS_DESCRIPTION" desc="Description for the flag to enable platform apps.">
         Enable advanced application capabilities.
       </message>
 
       <!-- Crashes -->
       <message name="IDS_CRASHES_TITLE" desc="Title for the chrome://crashes page.">
         Crashes
@@ skipping 9724 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>