cc: Cleanup class/struct forward declarations

cc/quads/render_pass.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_H_
 #define CC_QUADS_RENDER_PASS_H_
 
 #include <stddef.h>
 
 #include <unordered_map>
@@ skipping 10 matching lines @@
 #include "cc/quads/render_pass_id.h"
 #include "cc/surfaces/surface_id.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace base {
 namespace trace_event {
 class TracedValue;
 }
-class Value;
 }
 
 namespace cc {
 
 class DrawQuad;
 class CopyOutputRequest;
 class RenderPassDrawQuad;
 class SharedQuadState;
 
 // A list of DrawQuad objects, sorted internally in front-to-back order.
@@ skipping 97 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderPass);
 };
 
 using RenderPassList = std::vector<std::unique_ptr<RenderPass>>;
 using RenderPassIdHashMap =
     std::unordered_map<RenderPassId, RenderPass*, RenderPassIdHash>;
 
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_H_