Implement context menu for page and browser actions

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. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 2614 matching lines @@
 
       <!-- Extension installed bubble -->
       <message name="IDS_EXTENSION_INSTALLED_HEADING" desc="First line in the content area of the extension installed bubble. Instructs that the extension was installed.">
         <ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph> is now installed
       </message>
 
       <message name="IDS_EXTENSION_INSTALLED_PAGE_ACTION_INFO" desc="Text displayed in the InfoBubble which explains that the UI of this extension is a Page Action icon which may appear for some pages.">
         This icon will be visible when the extension can act on the current page.
       </message>
 
+      <message name="IDS_MANAGE_EXTENSIONS" desc="The 'Manage Extensions...' text in the context menu for when right-clicking on extension icons">
+        Manage extensions...
+      </message>
       <message name="IDS_EXTENSION_INSTALLED_MANAGE_INFO" desc="Text displayed in the InfoBubble with instructives on how to find the chrome://extensions/ management page">
         You can manage your installed extensions by clicking Extensions in the Tools menu.
       </message>
 
       <!-- chrome://extensions page -->
       <message name="IDS_EXTENSIONS_DEVELOPER_MODE_LINK" desc="Text of the link for developer mode.">
         Developer mode
       </message>
       <message name="IDS_EXTENSIONS_DEVELOPER_MODE_PREFIX" desc="Text of the prefix for the developer mode buttons.">
         Developer mode:
@@ skipping 3532 matching lines @@
       <message name="IDS_COMPACT_NAVBAR" desc="The menu item on the app menu to toggle compact navigation bar">
         Toggle Compact Navigation Bar
       </message>
     </if>
      <message name="IDS_BOOKMARK_BAR_IMPORT_LINK" desc="text shown for importing ">
        Import bookmarks now...
      </message>
     </messages>
   </release>
 </grit>