Make application shortcuts point to app_host.exe, install App Host during app installation.

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 5013 matching lines @@
       </message>
       <message name="IDS_EXTENSION_PACKAGE_UNZIP_ERROR" desc="Message for when an error occurs while unzipping a packaged extension or app.">
         Could not unzip extension
       </message>
       <message name="IDS_EXTENSION_PACKAGE_IMAGE_PATH_ERROR" desc="Error message for when a packaged extension or app contains a reference to an image that could be outside the package.">
         Illegal path (absolute or relative with '..'): '<ph name="IMAGE_PATH">$1<ex>../image.png</ex></ph>'
       </message>
       <message name="IDS_EXTENSION_PACKAGE_IMAGE_ERROR" desc="Message for when an error occurs while trying to decode an image found within a packaged extension or app.">
         Could not decode image: '<ph name="IMAGE_NAME">$1<ex>image.png</ex></ph>'
       </message>
+      <message name="IDS_EXTENSION_APP_HOST_INSTALL_ERROR" desc="Message for when an App Host fails to install.">
+        Application Runtime installation failed.
+      </message>
 
       <!-- Extension installed bubble -->
       <message name="IDS_EXTENSION_BUNDLE_INSTALLED_HEADING_EXTENSIONS" desc="First line in the content area of the extension bundle installed bubble. Instructs which extensions were installed.">
         The following extensions are now installed:
       </message>
       <message name="IDS_EXTENSION_BUNDLE_INSTALLED_HEADING_APPS" desc="First line in the content area of the extension bundle installed bubble. Instructs which apps were installed.">
         The following apps are now installed:
       </message>
       <message name="IDS_EXTENSION_BUNDLE_INSTALLED_HEADING_EXTENSION_APPS" desc="First line in the content area of the extension bundle installed bubble. Instructs which apps and extensions were installed.">
         The following apps and extensions were added:
@@ skipping 9770 matching lines @@
 
     <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>