Implement DrawQuad StructTraits

cc/quads/render_pass_draw_quad.h

 // Copyright 2011 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_QUADS_RENDER_PASS_DRAW_QUAD_H_
 #define CC_QUADS_RENDER_PASS_DRAW_QUAD_H_
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "cc/base/cc_export.h"
 #include "cc/output/filter_operations.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/render_pass_id.h"
 #include "cc/resources/resource_provider.h"
 
 namespace cc {
 
 class CC_EXPORT RenderPassDrawQuad : public DrawQuad {
  public:
+  static const size_t kMaskResourceIdIndex = 0;
+
   RenderPassDrawQuad();
   RenderPassDrawQuad(const RenderPassDrawQuad& other);
   ~RenderPassDrawQuad() override;
 
   void SetNew(const SharedQuadState* shared_quad_state,
               const gfx::Rect& rect,
               const gfx::Rect& visible_rect,
               RenderPassId render_pass_id,
               ResourceId mask_resource_id,
               const gfx::Vector2dF& mask_uv_scale,
@@ skipping 35 matching lines @@
   // Helper function to generate the normalized uv rect.
   gfx::RectF MaskUVRect() const;
 
   ResourceId mask_resource_id() const {
     return resources.ids[kMaskResourceIdIndex];
   }
 
   static const RenderPassDrawQuad* MaterialCast(const DrawQuad*);
 
  private:
-  static const size_t kMaskResourceIdIndex = 0;
-
   void ExtendValue(base::trace_event::TracedValue* value) const override;
 };
 
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_DRAW_QUAD_H_