[cc] Remove unused parameter to DidUpdateScrollOffset

cc/trees/layer_tree_host_common_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_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 62 matching lines @@
       : LayerTestCommon::LayerImplTest(VerifyTreeCalcsLayerTreeSettings()) {}
   explicit LayerTreeHostCommonTestBase(const LayerTreeSettings& settings)
       : LayerTestCommon::LayerImplTest(settings) {}
 
   static void SetScrollOffsetDelta(LayerImpl* layer_impl,
                                    const gfx::Vector2dF& delta) {
     if (layer_impl->layer_tree_impl()
             ->property_trees()
             ->scroll_tree.SetScrollOffsetDeltaForTesting(layer_impl->id(),
                                                          delta))
-      layer_impl->layer_tree_impl()->DidUpdateScrollOffset(
-          layer_impl->id(), layer_impl->transform_tree_index());
+      layer_impl->layer_tree_impl()->DidUpdateScrollOffset(layer_impl->id());
   }
 
   static float GetMaximumAnimationScale(LayerImpl* layer_impl) {
     return layer_impl->layer_tree_impl()
         ->property_trees()
         ->GetAnimationScales(layer_impl->transform_tree_index(),
                              layer_impl->layer_tree_impl())
         .maximum_animation_scale;
   }
 
@@ skipping 9743 matching lines @@
   EXPECT_EQ(scroll_child6.id, grand_child10->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent3->scroll_tree_index());
   EXPECT_EQ(scroll_child7.id, child8->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent4->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, child9->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, grand_child12->scroll_tree_index());
 }
 
 }  // namespace
 }  // namespace cc