Don't initialize NSS in Cast renderers for the chimera build.

chromecast/renderer/cast_content_renderer_client.cc

Index: chromecast/renderer/cast_content_renderer_client.cc
diff --git a/chromecast/renderer/cast_content_renderer_client.cc b/chromecast/renderer/cast_content_renderer_client.cc
index 4837dab3003db7dd1cc863bd8f243334ac928dba..1f7c4a68d1963492e191814368adeaa8ad887b65 100644
--- a/chromecast/renderer/cast_content_renderer_client.cc
+++ b/chromecast/renderer/cast_content_renderer_client.cc
@@ -114,7 +114,7 @@ CastContentRendererClient::GetRendererMessageFilters() {
 
 void CastContentRendererClient::RenderThreadStarted() {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-#if defined(USE_NSS_CERTS)
+#if !defined(USE_OPENSSL)
   // Note: Copied from chrome_render_process_observer.cc to fix b/8676652.
   //
   // On platforms where the system NSS shared libraries are used,