Make RenderPass::Id an isolated class

cc/trees/layer_tree_host_unittest.cc

 // 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.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 1506 matching lines @@
     surface_layer2_->SetReplicaLayer(replica_layer2_.get());
 
     layer_tree_host()->SetRootLayer(root_layer_);
     LayerTreeHostTest::SetupTree();
   }
 
   virtual void BeginTest() OVERRIDE { PostSetNeedsCommitToMainThread(); }
 
   virtual void DrawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     Renderer* renderer = host_impl->renderer();
-    RenderPass::Id surface1_render_pass_id = host_impl->active_tree()
-                                                 ->root_layer()
-                                                 ->children()[0]
-                                                 ->render_surface()
-                                                 ->RenderPassId();
-    RenderPass::Id surface2_render_pass_id = host_impl->active_tree()
-                                                 ->root_layer()
-                                                 ->children()[0]
-                                                 ->children()[0]
-                                                 ->render_surface()
-                                                 ->RenderPassId();
+    RenderPassId surface1_render_pass_id = host_impl->active_tree()
+                                               ->root_layer()
+                                               ->children()[0]
+                                               ->render_surface()
+                                               ->GetRenderPassId();
+    RenderPassId surface2_render_pass_id = host_impl->active_tree()
+                                               ->root_layer()
+                                               ->children()[0]
+                                               ->children()[0]
+                                               ->render_surface()
+                                               ->GetRenderPassId();
 
     switch (host_impl->active_tree()->source_frame_number()) {
       case 0:
         EXPECT_TRUE(
             renderer->HasAllocatedResourcesForTesting(surface1_render_pass_id));
         EXPECT_TRUE(
             renderer->HasAllocatedResourcesForTesting(surface2_render_pass_id));
 
         // Reduce the memory limit to only fit the root layer and one render
         // surface. This prevents any contents drawing into surfaces
@@ skipping 3479 matching lines @@
   const gfx::Size bounds_;
   FakeContentLayerClient client_;
   scoped_refptr<ContentLayerWithUpdateTracking> content_layer_;
   scoped_refptr<FakePictureLayer> picture_layer_;
   Layer* child_layer_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestContinuousPainting);
 
 }  // namespace cc