cc: Switch the DrawQuad enum names to chromium style and remove pragmas

cc/checkerboard_draw_quad.h

 // Copyright 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.
 
 #ifndef CC_CHECKERBOARD_DRAW_QUAD_H_
 #define CC_CHECKERBOARD_DRAW_QUAD_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/draw_quad.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace cc {
 
-#pragma pack(push, 4)
-
 class CC_EXPORT CheckerboardDrawQuad : public DrawQuad {
 public:
     static scoped_ptr<CheckerboardDrawQuad> create(const SharedQuadState*, const gfx::Rect&, SkColor);
 
     SkColor color() const { return m_color; };
 
     static const CheckerboardDrawQuad* materialCast(const DrawQuad*);
 private:
     CheckerboardDrawQuad(const SharedQuadState*, const gfx::Rect&, SkColor);
 
     SkColor m_color;
 };
 
-#pragma pack(pop)
-
 }
 
 #endif  // CC_CHECKERBOARD_DRAW_QUAD_H_