Add cr-toggle-button to Chrome

content/browser/webui/shared_resources_data_source.cc

Index: content/browser/webui/shared_resources_data_source.cc
diff --git a/content/browser/webui/shared_resources_data_source.cc b/content/browser/webui/shared_resources_data_source.cc
index e11c6b12bd4d16a2dda24bb52f253e9e95448a25..b19c98901f3bdb133030ad7f74bee8250b3e44b4 100644
--- a/content/browser/webui/shared_resources_data_source.cc
+++ b/content/browser/webui/shared_resources_data_source.cc
@@ -28,7 +28,8 @@ using ResourcesMap = base::hash_map<std::string, int>;
 const char* kPathAliases[][2] = {
   {"../../resources/default_100_percent/common/", "images/apps/"},
   {"../../resources/default_200_percent/common/", "images/2x/apps/"},
-  {"../../../third_party/polymer/components-chromium/", "polymer/"}
+  {"../../../third_party/polymer/components-chromium/", "polymer/"},
+  {"../../webui/resources/custom_elements/", "custom-elements/"}

[stevenjb, 2015/02/05 23:36:21]

This should probably come before third_party (or third_party should come first).

Also, 'custom-elements' isn't very descriptive to me. I would prefer
cr-custom-elements.

[michaelpg, 2015/02/06 08:55:43]

Done.

 };
 
 void AddResource(const std::string& path,