Clean LayerImpl's scroll offset callers in unit tests.

cc/test/layer_tree_host_common_test.h

 // Copyright 2014 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_TREE_HOST_COMMON_TEST_H_
 #define CC_TEST_LAYER_TREE_HOST_COMMON_TEST_H_
 
 #include <algorithm>
 #include <vector>
 
@@ skipping 141 matching lines @@
   LayerSettings layer_settings_;
 
   int render_surface_layer_list_count_;
 };
 
 class LayerTreeHostCommonTest : public LayerTreeHostCommonTestBase,
                                 public testing::Test {
  public:
   LayerTreeHostCommonTest();
   explicit LayerTreeHostCommonTest(const LayerTreeSettings& settings);
+
+ protected:
+  void SetScrollOffsetDelta(LayerImpl* layer_impl, const gfx::Vector2dF& delta);

[ajuma, 2016/03/07 19:10:19]

static void

[sunxd, 2016/03/09 01:51:20]

Done.

 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_LAYER_TREE_HOST_COMMON_TEST_H_