Update from https://crrev.com/316786

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"
 #include "cc/test/fake_layer_tree_host.h"
-#include "cc/test/mock_occlusion_tracker.h"
 #include "cc/trees/layer_tree_host_impl.h"
 
 #define EXPECT_SET_NEEDS_COMMIT(expect, code_to_test)                 \
   do {                                                                \
     EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times((expect)); \
     code_to_test;                                                     \
     Mock::VerifyAndClearExpectations(layer_tree_host_.get());         \
   } while (false)
 
 #define EXPECT_SET_NEEDS_UPDATE(expect, code_to_test)                       \
@@ skipping 98 matching lines @@
     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:
     FakeLayerTreeHostClient client_;
     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_