cc: Move TryScroll from LayerImpl to LayerTreeHostImpl

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 <set>
@@ skipping 10058 matching lines @@
   ScrollTree scroll_tree = host()->property_trees()->scroll_tree;
   ScrollTree expected_scroll_tree;
   ScrollNode* property_tree_root = expected_scroll_tree.Node(0);
   property_tree_root->id = kRootPropertyTreeNodeId;
   property_tree_root->parent_id = kInvalidPropertyTreeNodeId;
   property_tree_root->owner_id = kInvalidPropertyTreeNodeId;
   property_tree_root->data.scrollable = false;
   property_tree_root->data.main_thread_scrolling_reasons =
       MainThreadScrollingReason::kNotScrollingOnMain;
   property_tree_root->data.contains_non_fast_scrollable_region = false;
+  property_tree_root->data.transform_id = kRootPropertyTreeNodeId;
 
   // The node owned by root1
   ScrollNode scroll_root1;
   scroll_root1.id = 1;
   scroll_root1.owner_id = root1->id();
+  scroll_root1.data.transform_id = root1->transform_tree_index();
   expected_scroll_tree.Insert(scroll_root1, 0);
 
   // The node owned by parent2
   ScrollNode scroll_parent2;
   scroll_parent2.id = 2;
   scroll_parent2.owner_id = parent2->id();
   scroll_parent2.data.scrollable = true;
   scroll_parent2.data.main_thread_scrolling_reasons =
       parent2->main_thread_scrolling_reasons();
   scroll_parent2.data.scroll_clip_layer_bounds = root1->bounds();
   scroll_parent2.data.bounds = parent2->bounds();
   scroll_parent2.data.max_scroll_offset_affected_by_page_scale = true;
   scroll_parent2.data.is_inner_viewport_scroll_layer = true;
+  scroll_parent2.data.transform_id = parent2->transform_tree_index();
   expected_scroll_tree.Insert(scroll_parent2, 1);
 
   // The node owned by child6
   ScrollNode scroll_child6;
   scroll_child6.id = 3;
   scroll_child6.owner_id = child6->id();
   scroll_child6.data.main_thread_scrolling_reasons =
       child6->main_thread_scrolling_reasons();
+  scroll_child6.data.should_flatten = true;
+  scroll_child6.data.transform_id = child6->transform_tree_index();
   expected_scroll_tree.Insert(scroll_child6, 2);
 
   // The node owned by child7, child7 also owns a transform node
   ScrollNode scroll_child7;
   scroll_child7.id = 4;
   scroll_child7.owner_id = child7->id();
   scroll_child7.data.scrollable = true;
-  scroll_parent2.data.scroll_clip_layer_bounds = parent3->bounds();
-  scroll_parent2.data.bounds = child7->bounds();
+  scroll_child7.data.scroll_clip_layer_bounds = parent3->bounds();
+  scroll_child7.data.bounds = child7->bounds();
+  scroll_child7.data.transform_id = child7->transform_tree_index();
   expected_scroll_tree.Insert(scroll_child7, 1);
 
   // The node owned by grand_child11, grand_child11 also owns a transform node
   ScrollNode scroll_grand_child11;
   scroll_grand_child11.id = 5;
   scroll_grand_child11.owner_id = grand_child11->id();
   scroll_grand_child11.data.scrollable = true;
+  scroll_grand_child11.data.transform_id =
+      grand_child11->transform_tree_index();
   expected_scroll_tree.Insert(scroll_grand_child11, 4);
 
   // The node owned by parent5
   ScrollNode scroll_parent5;
   scroll_parent5.id = 8;
   scroll_parent5.owner_id = parent5->id();
   scroll_parent5.data.contains_non_fast_scrollable_region = true;
   scroll_parent5.data.bounds = gfx::Size(10, 10);
+  scroll_parent5.data.should_flatten = true;
+  scroll_parent5.data.transform_id = parent5->transform_tree_index();
   expected_scroll_tree.Insert(scroll_parent5, 1);
 
   expected_scroll_tree.set_needs_update(false);
 
   EXPECT_EQ(expected_scroll_tree, scroll_tree);
 
   // Check other layers' scroll_tree_index
   EXPECT_EQ(scroll_root1.id, page_scale_layer->scroll_tree_index());
   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