Rewrite scoped_ptr<T>(NULL) to use the default ctor in content/.

content/common/cc_messages.cc

 // Copyright (c) 2012 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 "content/common/cc_messages.h"
 
 #include "cc/output/compositor_frame.h"
 #include "content/public/common/common_param_traits.h"
 #include "third_party/WebKit/public/platform/WebFilterOperations.h"
 #include "ui/gfx/transform.h"
@@ skipping 361 matching lines @@
     DCHECK_LT(shared_quad_state_index, p.shared_quad_state_list.size());
     WriteParam(m, shared_quad_state_index);
   }
 }
 
 template<typename QuadType>
 static scoped_ptr<cc::DrawQuad> ReadDrawQuad(const Message* m,
                                              PickleIterator* iter) {
   scoped_ptr<QuadType> quad = QuadType::Create();
   if (!ReadParam(m, iter, quad.get()))
-    return scoped_ptr<QuadType>(NULL).template PassAs<cc::DrawQuad>();
+    return scoped_ptr<QuadType>().template PassAs<cc::DrawQuad>();
   return quad.template PassAs<cc::DrawQuad>();
 }
 
 bool ParamTraits<cc::RenderPass>::Read(
     const Message* m, PickleIterator* iter, param_type* p) {
   cc::RenderPass::Id id(-1, -1);
   gfx::Rect output_rect;
   gfx::RectF damage_rect;
   gfx::Transform transform_to_root_target;
   bool has_transparent_background;
@@ skipping 315 matching lines @@
   l->append(", [");
   for (size_t i = 0; i < p.render_pass_list.size(); ++i) {
     if (i)
       l->append(", ");
     LogParam(*p.render_pass_list[i], l);
   }
   l->append("])");
 }
 
 }  // namespace IPC