Run clang-modernize -use-nullptr over src/extensions/.

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index 80ee4ecd45f98ea75a24e203a254afdee5039167..27f0922ab553e53e7d568061fdbfcdcf09c5838c 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -813,7 +813,7 @@ void Dispatcher::OnDeliverMessage(int target_port_id, const Message& message) {
   MessagingBindings::DeliverMessage(script_context_set_,
                                     target_port_id,
                                     message,
-                                    NULL);  // All render views.
+                                    nullptr);  // All render views.
 }
 
 void Dispatcher::OnDispatchOnConnect(
@@ -834,7 +834,7 @@ void Dispatcher::OnDispatchOnConnect(
                                        source_tab,
                                        info,
                                        tls_channel_id,
-                                       NULL);  // All render views.
+                                       nullptr);  // All render views.
 }
 
 void Dispatcher::OnDispatchOnDisconnect(int port_id,
@@ -842,7 +842,7 @@ void Dispatcher::OnDispatchOnDisconnect(int port_id,
   MessagingBindings::DispatchOnDisconnect(script_context_set_,
                                           port_id,
                                           error_message,
-                                          NULL);  // All render views.
+                                          nullptr);  // All render views.
 }
 
 void Dispatcher::OnLoaded(
@@ -873,7 +873,7 @@ void Dispatcher::OnMessageInvoke(const std::string& extension_id,
                                  const base::ListValue& args,
                                  bool user_gesture) {
   InvokeModuleSystemMethod(
-      NULL, extension_id, module_name, function_name, args, user_gesture);
+      nullptr, extension_id, module_name, function_name, args, user_gesture);
 }
 
 void Dispatcher::OnSetChannel(int channel) {
@@ -1121,7 +1121,7 @@ void Dispatcher::UpdateBindingsForContext(ScriptContext* context) {
 
         // If this API has a parent feature (and isn't marked 'noparent'),
         // then this must be a function or event, so we should not register.
-        if (api_feature_provider->GetParent(feature) != NULL)
+        if (api_feature_provider->GetParent(feature) != nullptr)
           continue;
 
         // Skip chrome.test if this isn't a test.