[cc] Remove unused parameter to DidUpdateScrollOffset

cc/trees/layer_tree_host_impl_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_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 468 matching lines @@
     host_impl_->PrepareToDraw(&frame_data);
     host_impl_->DidDrawAllLayers(frame_data);
   }
 
   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());
   }
 
   void BeginImplFrameAndAnimate(BeginFrameArgs begin_frame_args,
                                 base::TimeTicks frame_time) {
     begin_frame_args.frame_time = frame_time;
     host_impl_->WillBeginImplFrame(begin_frame_args);
     host_impl_->Animate();
     host_impl_->UpdateAnimationState(true);
     host_impl_->DidFinishImplFrame();
   }
@@ skipping 2371 matching lines @@
     }
 
     // Setting the scroll offset outside a scroll should also cause the
     // scrollbar to appear and to schedule a scrollbar animation.
     if (host_impl_->active_tree()
             ->property_trees()
             ->scroll_tree.UpdateScrollOffsetBaseForTesting(
                 host_impl_->InnerViewportScrollLayer()->id(),
                 gfx::ScrollOffset(5, 5)))
       host_impl_->active_tree()->DidUpdateScrollOffset(
-          host_impl_->InnerViewportScrollLayer()->id(),
-          host_impl_->InnerViewportScrollLayer()->transform_tree_index());
+          host_impl_->InnerViewportScrollLayer()->id());
     EXPECT_FALSE(did_request_next_frame_);
     EXPECT_FALSE(did_request_redraw_);
     if (expecting_animations) {
       EXPECT_EQ(base::TimeDelta::FromMilliseconds(20),
                 requested_animation_delay_);
       EXPECT_FALSE(animation_task_.Equals(base::Closure()));
       requested_animation_delay_ = base::TimeDelta();
       animation_task_ = base::Closure();
     } else {
       EXPECT_EQ(base::TimeDelta(), requested_animation_delay_);
@@ skipping 8364 matching lines @@
   EXPECT_TRUE(host_impl_->use_gpu_rasterization());
 
   // Re-initialize with a software output surface.
   compositor_frame_sink_ = FakeCompositorFrameSink::CreateSoftware();
   host_impl_->InitializeRenderer(compositor_frame_sink_.get());
   EXPECT_FALSE(host_impl_->use_gpu_rasterization());
 }
 
 }  // namespace
 }  // namespace cc