Make RenderPass::Id an isolated class

cc/test/layer_test_common.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_TEST_LAYER_TEST_COMMON_H_
 #define CC_TEST_LAYER_TEST_COMMON_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/quads/render_pass.h"
@@ skipping 91 matching lines @@
           T::Create(host_->host_impl()->active_tree(), 2, a, b, c, d, e);
       T* ptr = layer.get();
       root_layer_impl_->AddChild(layer.template PassAs<LayerImpl>());
       return ptr;
     }
 
     void CalcDrawProps(const gfx::Size& viewport_size);
     void AppendQuadsWithOcclusion(LayerImpl* layer_impl,
                                   const gfx::Rect& occluded);
     void AppendQuadsForPassWithOcclusion(LayerImpl* layer_impl,
-                                         const RenderPass::Id& id,
+                                         const RenderPassId& id,
                                          const gfx::Rect& occluded);
     void AppendSurfaceQuadsWithOcclusion(RenderSurfaceImpl* surface_impl,
                                          const gfx::Rect& occluded);
 
     OutputSurface* output_surface() const {
       return host_->host_impl()->output_surface();
     }
     ResourceProvider* resource_provider() const {
       return host_->host_impl()->resource_provider();
     }
     LayerImpl* root_layer() const { return root_layer_impl_.get(); }
     FakeLayerTreeHostImpl* host_impl() const { return host_->host_impl(); }
     Proxy* proxy() const { return host_->host_impl()->proxy(); }
     const QuadList& quad_list() const { return render_pass_->quad_list; }
 
    private:
     scoped_ptr<FakeLayerTreeHost> host_;
     scoped_ptr<LayerImpl> root_layer_impl_;
     scoped_ptr<RenderPass> render_pass_;
     MockOcclusionTracker<LayerImpl> occlusion_tracker_;
   };
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_LAYER_TEST_COMMON_H_