Supported KeySysems should be also updated with bundled widevine

In linux, bundled widevine cdm is loaded by default but not initialized
by default. It is only initialized when user allows it.
Then, widevine cdm is added to CdmRegistry. That means renderer should
also update supported KeySystems during the runtime.

patches/chrome-renderer-media-chrome_key_systems_provider.cc.patch

@@ -0,0 +1,22 @@
+diff --git a/chrome/renderer/media/chrome_key_systems_provider.cc b/chrome/renderer/media/chrome_key_systems_provider.cc
+index e1ba75626fea8e5018964a51ff12561a41cc75e5..13e9c18f0b0fe742d482815e7a4e75bb63245488 100644
+--- a/chrome/renderer/media/chrome_key_systems_provider.cc
++++ b/chrome/renderer/media/chrome_key_systems_provider.cc
+@@ -8,7 +8,7 @@
+ #include "chrome/renderer/media/chrome_key_systems.h"
+ #include "third_party/widevine/cdm/buildflags.h"
+
+-#if BUILDFLAG(ENABLE_WIDEVINE_CDM_COMPONENT)
++#if BUILDFLAG(ENABLE_WIDEVINE_CDM_COMPONENT) || BUILDFLAG(BUNDLE_WIDEVINE_CDM)
+ #include "third_party/widevine/cdm/widevine_cdm_common.h"
+ #endif
+
+@@ -35,7 +35,7 @@ void ChromeKeySystemsProvider::AddSupportedKeySystems(
+
+ // Check whether all potentially supported key systems are supported. If so,
+ // no need to update again.
+-#if BUILDFLAG(ENABLE_WIDEVINE_CDM_COMPONENT)
++#if BUILDFLAG(ENABLE_WIDEVINE_CDM_COMPONENT) || BUILDFLAG(BUNDLE_WIDEVINE_CDM)
+   for (const auto& properties : *key_systems) {
+     if (properties->GetKeySystemName() == kWidevineKeySystem) {
+       is_update_needed_ = false;