Add default icon to app_host.exe, and use it in shortcuts during installation.

chrome/browser/extensions/app_host/app_host.rc

Index: chrome/browser/extensions/app_host/app_host.rc
diff --git a/chrome/browser/extensions/app_host/app_host.rc b/chrome/browser/extensions/app_host/app_host.rc
index ffd5341a22e1a90bac562d7967c0a89fe017b83b..572e66e7cdc1fb38ffce21115da49de2c3434ca2 100644
--- a/chrome/browser/extensions/app_host/app_host.rc
+++ b/chrome/browser/extensions/app_host/app_host.rc
@@ -1,5 +1,6 @@
 // Microsoft Visual C++ generated resource script.
 //
+#include "app_host_resource.h"
 
 #define APSTUDIO_READONLY_SYMBOLS
 /////////////////////////////////////////////////////////////////////////////
@@ -24,6 +25,21 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 
 /////////////////////////////////////////////////////////////////////////////
 //
+// Icon
+//
+
+// The application icon should: have the lowest ID, be placed first, and its
+// resource name should be alphabetically less than the name of any other icon
+// resource (http://msdn.microsoft.com/en-us/library/ms997538.aspx).
+// Note: chrome/installer/util/shell_util.cc depends on the order and number of
+// icons.  To avoid breaking existing shortcuts, add new icons at the end
+// (following the ordering described above).
+
+// Icon for the App Lancher.
+IDR_APP_HOST_MAIN  ICON  "..\\..\\..\\app\\theme\\app_list.ico"
+
+/////////////////////////////////////////////////////////////////////////////
+//
 // GOOGLEUPDATEAPPLICATIONCOMMANDS is a "well-known" marker resource defined
 // by Omaha. Executables must both be signed by Google and contain the marker
 // in order to expose application commands.