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

extensions/renderer/script_context_set.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/script_context_set.h"
 
 #include "base/message_loop/message_loop.h"
 #include "content/public/renderer/render_view.h"
 #include "extensions/common/extension.h"
 #include "extensions/renderer/script_context.h"
@@ skipping 31 matching lines @@
   }
 }
 
 ScriptContextSet::ContextSet ScriptContextSet::GetAll() const {
   return contexts_;
 }
 
 ScriptContext* ScriptContextSet::GetCurrent() const {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   return isolate->InContext() ? GetByV8Context(isolate->GetCurrentContext())
-                              : NULL;
+                              : nullptr;
 }
 
 ScriptContext* ScriptContextSet::GetCalling() const {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::Local<v8::Context> calling = isolate->GetCallingContext();
-  return calling.IsEmpty() ? NULL : GetByV8Context(calling);
+  return calling.IsEmpty() ? nullptr : GetByV8Context(calling);
 }
 
 ScriptContext* ScriptContextSet::GetByV8Context(
     v8::Handle<v8::Context> v8_context) const {
   for (ContextSet::const_iterator iter = contexts_.begin();
        iter != contexts_.end();
        ++iter) {
     if ((*iter)->v8_context() == v8_context)
       return *iter;
   }
 
-  return NULL;
+  return nullptr;
 }
 
 void ScriptContextSet::ForEach(
     const std::string& extension_id,
     content::RenderView* render_view,
     const base::Callback<void(ScriptContext*)>& callback) const {
   // We copy the context list, because calling into javascript may modify it
   // out from under us.
   ContextSet contexts = GetAll();
 
@@ skipping 34 matching lines @@
       (*it)->DispatchOnUnloadEvent();
       removed.insert(*it);
       Remove(*it);
     }
   }
 
   return removed;
 }
 
 }  // namespace extensions