Eliminate implicit conversion from scoped_refptr<T> to T*

webkit/plugins/npapi/plugin_host.cc

Index: webkit/plugins/npapi/plugin_host.cc
diff --git a/webkit/plugins/npapi/plugin_host.cc b/webkit/plugins/npapi/plugin_host.cc
index dbd405251578e6e6afa96afba27e2f17793a3150..927338386e22d5dde492f660b1c76b14ff2df3ba 100644
--- a/webkit/plugins/npapi/plugin_host.cc
+++ b/webkit/plugins/npapi/plugin_host.cc
@@ -87,14 +87,14 @@ PluginHost::PluginHost() {
 PluginHost::~PluginHost() {
 }
 
-PluginHost *PluginHost::Singleton() {
+PluginHost* PluginHost::Singleton() {
   CR_DEFINE_STATIC_LOCAL(scoped_refptr<PluginHost>, singleton, ());
-  if (singleton.get() == NULL) {
+  if (singleton) {
     singleton = new PluginHost();
   }
 
-  DCHECK(singleton.get() != NULL);
-  return singleton;
+  DCHECK(singleton);
+  return singleton.get();
 }
 
 void PluginHost::InitializeHostFuncs() {