Blank UI for web component tests.

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

Index: chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
diff --git a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
index fc43f0d61a8ed563fc228dff359009de716304e8..2c6825cdf00fb61faff73aafe54c17e591a6ed3e 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -51,6 +51,7 @@
 #include "chrome/browser/ui/webui/translate_internals/translate_internals_ui.h"
 #include "chrome/browser/ui/webui/user_actions/user_actions_ui.h"
 #include "chrome/browser/ui/webui/version_ui.h"
+#include "chrome/browser/ui/webui/web_component_test_ui.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
@@ -301,6 +302,8 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
    ***************************************************************************/
   // We must compare hosts only since some of the Web UIs append extra stuff
   // after the host name.
+  if (url.host() == chrome::kChromeUIWebComponentTestHost)
+    return &NewWebUI<WebComponentTestUI>;

[stevenjb, 2015/05/05 22:25:00]

Either alphabetize this or put a comment above this with why it is listed first
(and space the comment from lines 303-304).

[michaelpg, 2015/05/08 16:57:39]

Done. (No reason for it to be first, I just forgot to re-sort after changing the
name.)

   // All platform builds of Chrome will need to have a cloud printing
   // dialog as backup.  It's just that on Chrome OS, it's the only
   // print dialog.