Implement a simple Extension App Omnibox provider.

chrome/browser/autocomplete/autocomplete.cc

Index: chrome/browser/autocomplete/autocomplete.cc
===================================================================
--- chrome/browser/autocomplete/autocomplete.cc	(revision 79981)
+++ chrome/browser/autocomplete/autocomplete.cc	(working copy)
@@ -16,6 +16,7 @@
 #include "chrome/browser/autocomplete/autocomplete_controller_delegate.h"
 #include "chrome/browser/autocomplete/autocomplete_match.h"
 #include "chrome/browser/autocomplete/builtin_provider.h"
+#include "chrome/browser/autocomplete/extension_app_provider.h"
 #include "chrome/browser/autocomplete/history_contents_provider.h"
 #include "chrome/browser/autocomplete/history_quick_provider.h"
 #include "chrome/browser/autocomplete/history_url_provider.h"
@@ -798,6 +799,7 @@
   providers_.push_back(new KeywordProvider(this, profile));
   providers_.push_back(new HistoryContentsProvider(this, profile));
   providers_.push_back(new BuiltinProvider(this, profile));
+  providers_.push_back(new ExtensionAppProvider(this, profile));
   for (ACProviders::iterator i(providers_.begin()); i != providers_.end(); ++i)
     (*i)->AddRef();
 }