cc: Move data to LayerTree from LayerTreeHost.

cc/layers/texture_layer_unittest.cc

Index: cc/layers/texture_layer_unittest.cc
diff --git a/cc/layers/texture_layer_unittest.cc b/cc/layers/texture_layer_unittest.cc
index eaf59bb3e1329d28d4d50b11684821712d7855ef..9454055474f15442cdc8041d2497e16afc835fe6 100644
--- a/cc/layers/texture_layer_unittest.cc
+++ b/cc/layers/texture_layer_unittest.cc
@@ -220,8 +220,9 @@ class TextureLayerTest : public testing::Test {
   void SetUp() override {
     layer_tree_host_ =
         MockLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
+    layer_tree_ = layer_tree_host_->GetLayerTree();
     EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AnyNumber());
-    layer_tree_host_->SetViewportSize(gfx::Size(10, 10));
+    layer_tree_->SetViewportSize(gfx::Size(10, 10));
     Mock::VerifyAndClearExpectations(layer_tree_host_.get());
   }
 
@@ -229,11 +230,12 @@ class TextureLayerTest : public testing::Test {
     Mock::VerifyAndClearExpectations(layer_tree_host_.get());
     EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AnyNumber());
 
-    layer_tree_host_->SetRootLayer(nullptr);
+    layer_tree_->SetRootLayer(nullptr);
     layer_tree_host_ = nullptr;
   }
 
   std::unique_ptr<MockLayerTreeHost> layer_tree_host_;
+  LayerTree* layer_tree_;
   FakeImplTaskRunnerProvider task_runner_provider_;
   FakeLayerTreeHostClient fake_client_;
   TestSharedBitmapManager shared_bitmap_manager_;
@@ -246,7 +248,7 @@ class TextureLayerTest : public testing::Test {
 TEST_F(TextureLayerTest, CheckPropertyChangeCausesCorrectBehavior) {
   scoped_refptr<TextureLayer> test_layer =
       TextureLayer::CreateForMailbox(nullptr);
-  EXPECT_SET_NEEDS_COMMIT(1, layer_tree_host_->SetRootLayer(test_layer));
+  EXPECT_SET_NEEDS_COMMIT(1, layer_tree_->SetRootLayer(test_layer));
 
   // Test properties that should call SetNeedsCommit.  All properties need to
   // be set to new values in order for SetNeedsCommit to be called.
@@ -286,7 +288,7 @@ TEST_F(TextureLayerWithMailboxTest, ReplaceMailboxOnMainThreadBeforeCommit) {
   ASSERT_TRUE(test_layer.get());
 
   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AnyNumber());
-  layer_tree_host_->SetRootLayer(test_layer);
+  layer_tree_->SetRootLayer(test_layer);
   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 
   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AtLeast(1));
@@ -688,8 +690,8 @@ class TextureLayerImplWithMailboxThreadedCallback : public LayerTreeTest {
     layer_->SetBounds(bounds);
 
     root_->AddChild(layer_);
-    layer_tree_host()->SetRootLayer(root_);
-    layer_tree_host()->SetViewportSize(bounds);
+    layer_tree()->SetRootLayer(root_);
+    layer_tree()->SetViewportSize(bounds);
     SetMailbox('1');
     EXPECT_EQ(0, callback_count_);
 
@@ -789,8 +791,8 @@ class TextureLayerMailboxIsActivatedDuringCommit : public LayerTreeTest {
     layer_->SetBounds(bounds);
 
     root_->AddChild(layer_);
-    layer_tree_host()->SetRootLayer(root_);
-    layer_tree_host()->SetViewportSize(bounds);
+    layer_tree()->SetRootLayer(root_);
+    layer_tree()->SetViewportSize(bounds);
     SetMailbox('1');
 
     PostSetNeedsCommitToMainThread();
@@ -850,6 +852,7 @@ class TextureLayerImplWithMailboxTest : public TextureLayerTest {
     TextureLayerTest::SetUp();
     layer_tree_host_ =
         MockLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
+    layer_tree_ = layer_tree_host_->GetLayerTree();
     host_impl_.SetVisible(true);
     EXPECT_TRUE(host_impl_.InitializeRenderer(output_surface_.get()));
   }
@@ -1080,7 +1083,7 @@ class TextureLayerNoExtraCommitForMailboxTest
     texture_layer_->SetIsDrawable(true);
     root->AddChild(texture_layer_);
 
-    layer_tree_host()->SetRootLayer(root);
+    layer_tree()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
   }
 
@@ -1172,7 +1175,7 @@ class TextureLayerChangeInvisibleMailboxTest
     texture_layer_->SetIsDrawable(true);
     parent_layer_->AddChild(texture_layer_);
 
-    layer_tree_host()->SetRootLayer(root);
+    layer_tree()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
   }
 
@@ -1270,7 +1273,7 @@ class TextureLayerReleaseResourcesBase
     texture_layer->SetBounds(gfx::Size(10, 10));
     texture_layer->SetIsDrawable(true);
 
-    layer_tree_host()->root_layer()->AddChild(texture_layer);
+    layer_tree()->root_layer()->AddChild(texture_layer);
     texture_layer_id_ = texture_layer->id();
   }
 
@@ -1344,8 +1347,8 @@ class TextureLayerWithMailboxMainThreadDeleted : public LayerTreeTest {
     layer_->SetBounds(bounds);
 
     root_->AddChild(layer_);
-    layer_tree_host()->SetRootLayer(root_);
-    layer_tree_host()->SetViewportSize(bounds);
+    layer_tree()->SetRootLayer(root_);
+    layer_tree()->SetViewportSize(bounds);
   }
 
   void BeginTest() override {
@@ -1414,8 +1417,8 @@ class TextureLayerWithMailboxImplThreadDeleted : public LayerTreeTest {
     layer_->SetBounds(bounds);
 
     root_->AddChild(layer_);
-    layer_tree_host()->SetRootLayer(root_);
-    layer_tree_host()->SetViewportSize(bounds);
+    layer_tree()->SetRootLayer(root_);
+    layer_tree()->SetViewportSize(bounds);
   }
 
   void BeginTest() override {