Make RenderPass::Id an isolated class

cc/test/layer_test_common.cc

 // 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.
 
 #include "cc/test/layer_test_common.h"
 
 #include "cc/base/math_util.h"
 #include "cc/base/region.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/quads/draw_quad.h"
@@ skipping 116 matching lines @@
   render_pass_->quad_list.clear();
   render_pass_->shared_quad_state_list.clear();
   occlusion_tracker_.set_occluded_target_rect(occluded);
   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
   layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
   layer_impl->DidDraw(resource_provider());
 }
 
 void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
     LayerImpl* layer_impl,
-    const RenderPass::Id& id,
+    const RenderPassId& id,
     const gfx::Rect& occluded) {
   AppendQuadsData data(id);
 
   render_pass_->quad_list.clear();
   render_pass_->shared_quad_state_list.clear();
   occlusion_tracker_.set_occluded_target_rect(occluded);
   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
   layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
   layer_impl->DidDraw(resource_provider());
 }
 
 void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
     RenderSurfaceImpl* surface_impl,
     const gfx::Rect& occluded) {
   AppendQuadsData data;
 
   render_pass_->quad_list.clear();
   render_pass_->shared_quad_state_list.clear();
   occlusion_tracker_.set_occluded_target_rect_for_contributing_surface(
       occluded);
   bool for_replica = false;
-  RenderPass::Id id(1, 1);
+  RenderPassId id(1, 1);
   surface_impl->AppendQuads(
       render_pass_.get(), occlusion_tracker_, &data, for_replica, id);
 }
 
 }  // namespace cc