Get rid of two callsites of effect_tree.FindNodeIndexFromOwningLayerId.

cc/trees/damage_tracker_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/damage_tracker.h"
 
 #include <stddef.h>
 
 #include "cc/base/filter_operation.h"
 #include "cc/base/filter_operations.h"
@@ skipping 189 matching lines @@
   LayerImpl* child1 = root->test_properties()->children[0];
   LayerImpl* child2 = root->test_properties()->children[1];
 
   gfx::Rect child_damage_rect;
   EXPECT_TRUE(GetRenderSurface(child1)->damage_tracker()->GetDamageRectIfValid(
       &child_damage_rect));
   gfx::Rect root_damage_rect;
   EXPECT_TRUE(GetRenderSurface(root)->damage_tracker()->GetDamageRectIfValid(
       &root_damage_rect));
 
-  ASSERT_TRUE(GetRenderSurface(child1));
-  EXPECT_FALSE(GetRenderSurface(child2));
+  EXPECT_NE(GetRenderSurface(child1), GetRenderSurface(root));
+  EXPECT_EQ(GetRenderSurface(child2), GetRenderSurface(root));
   EXPECT_EQ(3, GetRenderSurface(root)->num_contributors());
   EXPECT_EQ(2, GetRenderSurface(child1)->num_contributors());
 
   // The render surface for child1 only has a content_rect that encloses
   // grand_child1 and grand_child2, because child1 does not draw content.
   EXPECT_EQ(gfx::Rect(190, 190, 16, 18).ToString(),
             child_damage_rect.ToString());
   EXPECT_EQ(gfx::Rect(500, 500).ToString(), root_damage_rect.ToString());
 }
 
@@ skipping 876 matching lines @@
   gfx::Rect root_damage_rect;
 
   // CASE 1: If a descendant surface disappears, its entire old area becomes
   //         exposed.
   ClearDamageForAllSurfaces(root);
   child1->test_properties()->force_render_surface = false;
   root->layer_tree_impl()->property_trees()->needs_rebuild = true;
   EmulateDrawingOneFrame(root);
 
   // Sanity check that there is only one surface now.
-  ASSERT_FALSE(GetRenderSurface(child1));
+  ASSERT_EQ(GetRenderSurface(child1), GetRenderSurface(root));
   ASSERT_EQ(4, GetRenderSurface(root)->num_contributors());
 
   EXPECT_TRUE(GetRenderSurface(root)->damage_tracker()->GetDamageRectIfValid(
       &root_damage_rect));
   EXPECT_EQ(gfx::Rect(290, 290, 16, 18).ToString(),
             root_damage_rect.ToString());
 
   // CASE 2: If a descendant surface appears, its entire old area becomes
   //         exposed.
 
@@ skipping 514 matching lines @@
   ASSERT_TRUE(GetRenderSurface(root)->damage_tracker()->GetDamageRectIfValid(
       &damage_rect));
   EXPECT_TRUE(damage_rect.Contains(GetRenderSurface(root)->content_rect()));
   EXPECT_TRUE(damage_rect.Contains(
       gfx::ToEnclosingRect(GetRenderSurface(child1)->DrawableContentRect())));
   EXPECT_EQ(damage_rect, GetRenderSurface(root)->GetDamageRect());
 }
 
 }  // namespace
 }  // namespace cc