Upon execution of the App Host, ask Omaha to install the Chrome Binaries if they are not present on…

chrome/chrome_browser_extensions.gypi

Index: chrome/chrome_browser_extensions.gypi
diff --git a/chrome/chrome_browser_extensions.gypi b/chrome/chrome_browser_extensions.gypi
index 62b697edea52b34b0ac8c984e52d6ede6092801f..928f5a94f8fcf2e16d086f00e58e4f3a083f4ed0 100644
--- a/chrome/chrome_browser_extensions.gypi
+++ b/chrome/chrome_browser_extensions.gypi
@@ -757,10 +757,15 @@
           'dependencies': [
             '<(DEPTH)/base/base.gyp:base',
             '<(DEPTH)/chrome/chrome.gyp:launcher_support',
+            '<(DEPTH)/google_update/google_update.gyp:google_update',
           ],
           'sources': [
-            'browser/extensions/app_host.rc',
-            'browser/extensions/app_host_stub_main.cc',
+            'browser/extensions/app_host/app_host.rc',
+            'browser/extensions/app_host/app_host_main.cc',
+            'browser/extensions/app_host/binaries_installer.cc',
+            'browser/extensions/app_host/binaries_installer.h',
+            'browser/extensions/app_host/binaries_installer_internal.cc',
+            'browser/extensions/app_host/binaries_installer_internal.h',
           ],
         },
       ],