cc: Split Proxy to eliminate unnecessary dependencies on the impl side

cc/layers/layer_position_constraint_unittest.cc

 // Copyright 2013 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/layers/layer_position_constraint.h"
 
 #include <vector>
 
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/test/fake_layer_tree_host.h"
+#include "cc/test/fake_proxy.h"
 #include "cc/test/geometry_test_utils.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 
 class LayerWithForcedDrawsContent : public Layer {
  public:
@@ skipping 1085 matching lines @@
   expected_fixed_child_transform.Translate(20.0, 20.0);
 
   EXPECT_TRANSFORMATION_MATRIX_EQ(expected_scroll_layer_transform,
                                   scroll_layer_impl_->draw_transform());
   EXPECT_TRANSFORMATION_MATRIX_EQ(expected_fixed_child_transform,
                                   fixed_child_impl->draw_transform());
 }
 
 }  // namespace
 }  // namespace cc