[Chromecast] Pass security origin to CastCdm and remove destination url

chromecast/browser/media/cast_browser_cdm_factory.cc

Index: chromecast/browser/media/cast_browser_cdm_factory.cc
diff --git a/chromecast/browser/media/cast_browser_cdm_factory.cc b/chromecast/browser/media/cast_browser_cdm_factory.cc
index c9298c85430498b0c505c11836a3caf83ce9d510..45606ece57e8040bb81bad74b7affd2831b74d97 100644
--- a/chromecast/browser/media/cast_browser_cdm_factory.cc
+++ b/chromecast/browser/media/cast_browser_cdm_factory.cc
@@ -53,7 +53,7 @@ void CastBrowserCdmFactory::Create(
   if (cast_key_system == chromecast::media::KEY_SYSTEM_CLEAR_KEY) {
     // TODO(gunsch): handle ClearKey decryption. See crbug.com/441957
   } else {
-    cast_cdm = CreatePlatformBrowserCdm(cast_key_system);
+    cast_cdm = CreatePlatformBrowserCdm(cast_key_system, security_origin);
   }
 
   if (!cast_cdm) {
@@ -81,7 +81,8 @@ void CastBrowserCdmFactory::Create(
 }
 
 scoped_refptr<CastCdm> CastBrowserCdmFactory::CreatePlatformBrowserCdm(
-    const CastKeySystem& cast_key_system) {
+    const CastKeySystem& cast_key_system,
+    const GURL& security_origin) {
   return nullptr;
 }