Browser Plugin: Move to old namespace

content/renderer/browser_plugin/old/browser_plugin_registry.cc

Index: content/renderer/browser_plugin/old/browser_plugin_registry.cc
diff --git a/content/renderer/browser_plugin/old/browser_plugin_registry.cc b/content/renderer/browser_plugin/old/browser_plugin_registry.cc
index 823fd80e71412d28463ca339d4dad65288e18bd1..28b779aee43c3fc7df735d751f7d602af07ace5b 100644
--- a/content/renderer/browser_plugin/old/browser_plugin_registry.cc
+++ b/content/renderer/browser_plugin/old/browser_plugin_registry.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 
 namespace content {
+namespace old {
 
 BrowserPluginRegistry::BrowserPluginRegistry() {
 }
@@ -42,4 +43,5 @@ void BrowserPluginRegistry::PluginModuleDead(
   NOTREACHED();  // Should have always found the module above.
 }
 
+}  // namespace old
 }  // namespace content