cc: Remove support for disabling non-root render surfaces.

cc/trees/layer_tree_host_common_perftest.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 <stddef.h>
 
 #include <deque>
 #include <memory>
 #include <sstream>
 
@@ skipping 68 matching lines @@
  public:
   void RunCalcDrawProps() { RunTest(CompositorMode::SINGLE_THREADED); }
 
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
     timer_.Reset();
     LayerTreeImpl* active_tree = host_impl->active_tree();
 
     do {
-      bool can_render_to_separate_surface = true;
       int max_texture_size = 8096;
-      DoCalcDrawPropertiesImpl(can_render_to_separate_surface,
-                               max_texture_size,
-                               active_tree,
-                               host_impl);
+      DoCalcDrawPropertiesImpl(max_texture_size, active_tree, host_impl);
 
       timer_.NextLap();
     } while (!timer_.HasTimeLimitExpired());
 
     EndTest();
   }
 
-  void DoCalcDrawPropertiesImpl(bool can_render_to_separate_surface,
-                                int max_texture_size,
+  void DoCalcDrawPropertiesImpl(int max_texture_size,
                                 LayerTreeImpl* active_tree,
                                 LayerTreeHostImpl* host_impl) {
     RenderSurfaceList update_list;
     LayerTreeHostCommon::CalcDrawPropsImplInputs inputs(
         active_tree->root_layer_for_testing(), active_tree->DrawViewportSize(),
         host_impl->DrawTransform(), active_tree->device_scale_factor(),
         active_tree->current_page_scale_factor(),
         active_tree->InnerViewportContainerLayer(),
         active_tree->InnerViewportScrollLayer(),
         active_tree->OuterViewportScrollLayer(),
         active_tree->elastic_overscroll()->Current(active_tree->IsActiveTree()),
         active_tree->OverscrollElasticityLayer(), max_texture_size,
-        can_render_to_separate_surface,
         host_impl->settings().layer_transforms_should_scale_layer_contents,
         &update_list, active_tree->property_trees());
     LayerTreeHostCommon::CalculateDrawProperties(&inputs);
   }
 };
 
 TEST_F(CalcDrawPropsTest, TenTen) {
   SetTestName("10_10");
   ReadTestFile("10_10_layer_tree");
   RunCalcDrawProps();
@@ skipping 12 matching lines @@
 }
 
 TEST_F(CalcDrawPropsTest, TouchRegionHeavy) {
   SetTestName("touch_region_heavy");
   ReadTestFile("touch_region_heavy");
   RunCalcDrawProps();
 }
 
 }  // namespace
 }  // namespace cc