media: Verify CDM Host files

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index 604acb0165115bce865463c258eee0a876ab3495..c13ae9bce959031f5e42ab8798eb56ea74ecc944 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -48,6 +48,7 @@
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/utility_process_host_impl.h"
+#include "content/common/media/cdm_host_files.h"
 #include "content/common/set_process_title.h"
 #include "content/common/url_schemes.h"
 #include "content/gpu/in_process_gpu_thread.h"
@@ -333,6 +334,15 @@ int RunZygote(const MainFunctionParams& main_function_params,
       command_line.GetSwitchValueASCII(switches::kProcessType);
   ContentClientInitializer::Set(process_type, delegate);
 
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
+  if (process_type != switches::kPpapiPluginProcess) {
+    DVLOG(1) << "Closing CDM files for non-ppapi process.";
+    CdmHostFiles::TakeGlobalInstance().reset();
+  } else {
+    DVLOG(1) << "Not closing CDM files for ppapi process.";
+  }
+#endif
+
   MainFunctionParams main_params(command_line);
   main_params.zygote_child = true;