[Aura] Initial app list webui.

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index fe19c23fcee4070846792199ab330f0f37c1786e..f5b8d14bb02440c56d70c61763d3ce1fe641f199 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -108,6 +108,10 @@ const char kChromeUIHttpAuthURL[] = "chrome://http-auth/";
 const char kChromeUIRepostFormWarningURL[] = "chrome://repost-form-warning/";
 #endif
 
+#if defined(USE_AURA)
+const char kChromeUIAppListURL[] = "chrome://app-list/";
+#endif
+
 // Add Chrome UI hosts here, in alphabetical order.
 // Add hosts to kChromePaths in browser_about_handler.cc to be listed by
 // chrome://chrome-urls (about:about) and the built-in AutocompleteProvider.
@@ -235,6 +239,10 @@ const char kChromeUIHttpAuthHost[] = "http-auth";
 const char kChromeUIRepostFormWarningHost[] = "repost-form-warning";
 #endif
 
+#if defined(USE_AURA)
+const char kChromeUIAppListHost[] = "app-list";
+#endif
+
 // Option sub pages.
 // Add sub page paths to kChromeSettingsSubPages in builtin_provider.cc to be
 // listed by the built-in AutocompleteProvider.