Fix for chrome://cast getting blocked by content security policy.

chrome/browser/ui/webui/cast/cast_ui.cc

Index: chrome/browser/ui/webui/cast/cast_ui.cc
diff --git a/chrome/browser/ui/webui/cast/cast_ui.cc b/chrome/browser/ui/webui/cast/cast_ui.cc
index 453b472114a7528a3f8d3195ccae2353ae4bcb9c..13d5e2cccb4fe6bc29f2d5002f2a434108c31d85 100644
--- a/chrome/browser/ui/webui/cast/cast_ui.cc
+++ b/chrome/browser/ui/webui/cast/cast_ui.cc
@@ -32,7 +32,7 @@ CastUI::CastUI(content::WebUI* web_ui)
   html_source->AddString("extensionId", extension_id);
   html_source->SetJsonPath("strings.js");
   html_source->SetDefaultResource(IDR_CAST_HTML);
-  html_source->OverrideContentSecurityPolicyObjectSrc("object-src *;");
+  html_source->OverrideContentSecurityPolicyObjectSrc("object-src * chrome:;");
 
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), html_source);
 }