cc: Break up with FakeLayerTreeHostClient.

cc/trees/tree_synchronizer_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/tree_synchronizer.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
 #include "base/format_macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/test/animation_test_common.h"
 #include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host.h"
 #include "cc/test/fake_rendering_stats_instrumentation.h"
+#include "cc/test/stub_layer_tree_host_single_thread_client.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/trees/effect_node.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "cc/trees/task_runner_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
@@ skipping 126 matching lines @@
       if (from_map.PendingBase() != from_other.PendingBase() ||
           from_map.ActiveBase() != from_other.ActiveBase() ||
           from_map.Delta() != from_other.Delta() ||
           from_map.PendingDelta().get() != from_other.PendingDelta().get())
         return false;
     }
     return true;
   }
 
   FakeLayerTreeHostClient client_;
+  StubLayerTreeHostSingleThreadClient single_thread_client_;
   TestTaskGraphRunner task_graph_runner_;
   std::unique_ptr<FakeLayerTreeHost> host_;
 };
 
 // Attempts to synchronizes a null tree. This should not crash, and should
 // return a null tree.
 TEST_F(TreeSynchronizerTest, SyncNullTree) {
   TreeSynchronizer::SynchronizeTrees(static_cast<Layer*>(NULL),
                                      host_->active_tree());
   EXPECT_TRUE(!host_->active_tree()->root_layer_for_testing());
@@ skipping 376 matching lines @@
 
   host_impl->CreatePendingTree();
   host_->CommitAndCreatePendingTree();
   host_impl->ActivateSyncTree();
 
   EXPECT_EQ(scroll_layer->id(),
             host_impl->active_tree()->CurrentlyScrollingLayer()->id());
 }
 
 TEST_F(TreeSynchronizerTest, SynchronizeScrollTreeScrollOffsetMap) {
-  host_->InitializeSingleThreaded(&client_, base::ThreadTaskRunnerHandle::Get(),
-                                  nullptr);
+  host_->InitializeSingleThreaded(&single_thread_client_,
+                                  base::ThreadTaskRunnerHandle::Get(), nullptr);
   LayerTreeSettings settings;
   FakeLayerTreeHostImplClient client;
   FakeImplTaskRunnerProvider task_runner_provider;
   FakeRenderingStatsInstrumentation stats_instrumentation;
   TestSharedBitmapManager shared_bitmap_manager;
   TestTaskGraphRunner task_graph_runner;
   FakeLayerTreeHostImpl* host_impl = host_->host_impl();
   host_impl->CreatePendingTree();
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
@@ skipping 74 matching lines @@
   scroll_offset_map[scroll_layer->id()]->SetCurrent(gfx::ScrollOffset(20, 30));
   scroll_offset_map[scroll_layer->id()]->PullDeltaForMainThread();
   scroll_offset_map[scroll_layer->id()]->SetCurrent(gfx::ScrollOffset(40, 50));
   scroll_offset_map[scroll_layer->id()]->PushFromMainThread(
       gfx::ScrollOffset(100, 100));
   scroll_offset_map[scroll_layer->id()]->PushPendingToActive();
   EXPECT_TRUE(is_equal(scroll_offset_map, scroll_tree.scroll_offset_map()));
 }
 
 TEST_F(TreeSynchronizerTest, RefreshPropertyTreesCachedData) {
-  host_->InitializeSingleThreaded(&client_, base::ThreadTaskRunnerHandle::Get(),
-                                  nullptr);
+  host_->InitializeSingleThreaded(&single_thread_client_,
+                                  base::ThreadTaskRunnerHandle::Get(), nullptr);
   LayerTreeSettings settings;
   FakeLayerTreeHostImplClient client;
   FakeImplTaskRunnerProvider task_runner_provider;
   FakeRenderingStatsInstrumentation stats_instrumentation;
   TestSharedBitmapManager shared_bitmap_manager;
   TestTaskGraphRunner task_graph_runner;
   FakeLayerTreeHostImpl* host_impl = host_->host_impl();
   host_impl->CreatePendingTree();
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
@@ skipping 25 matching lines @@
   host_->CommitAndCreatePendingTree();
   host_impl->ActivateSyncTree();
   EXPECT_EQ(
       CombinedAnimationScale(0.f, 0.f),
       host_impl->active_tree()->property_trees()->GetAnimationScales(
           transform_layer->transform_tree_index(), host_impl->active_tree()));
 }
 
 }  // namespace
 }  // namespace cc