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..ef4d290a75694de4aab7b5be4d38334219fe44eb 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 +25,15 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 
 /////////////////////////////////////////////////////////////////////////////
 //
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDI_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.