Fix a bunch of IWYU violators that don't include scoped_ptr.h

extensions/renderer/event_bindings.h

 // 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.
 
 #ifndef EXTENSIONS_RENDERER_EVENT_BINDINGS_H_
 #define EXTENSIONS_RENDERER_EVENT_BINDINGS_H_
 
 #include <set>
 #include <string>
 
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "extensions/renderer/object_backed_native_handler.h"
 #include "v8/include/v8.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace extensions {
 class EventMatcher;
 
@@ skipping 57 matching lines @@
   // can detch them on unload.
   std::set<std::string> attached_event_names_;
   std::set<int> attached_matcher_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(EventBindings);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_EVENT_BINDINGS_H_