cc: Add checker-imaging support to TileManager.

cc/test/fake_layer_tree_host_impl.cc

 // Copyright 2012 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/test/fake_layer_tree_host_impl.h"
 
 #include <stddef.h>
 
 #include "cc/animation/animation_host.h"
 #include "cc/test/begin_frame_args_test.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/layer_tree_settings_for_testing.h"
 #include "cc/trees/layer_tree_impl.h"
 
 namespace cc {
 
 FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(
     TaskRunnerProvider* task_runner_provider,
     TaskGraphRunner* task_graph_runner)
     : FakeLayerTreeHostImpl(LayerTreeSettingsForTesting(),
                             task_runner_provider,
                             task_graph_runner) {}
 
 FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(
     const LayerTreeSettings& settings,
     TaskRunnerProvider* task_runner_provider,
     TaskGraphRunner* task_graph_runner)
+    : FakeLayerTreeHostImpl(settings,
+                            task_runner_provider,
+                            task_graph_runner,
+                            nullptr) {}
+
+FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(
+    const LayerTreeSettings& settings,
+    TaskRunnerProvider* task_runner_provider,
+    TaskGraphRunner* task_graph_runner,
+    scoped_refptr<base::SequencedTaskRunner> image_worker_task_runner)
     : LayerTreeHostImpl(settings,
                         &client_,
                         task_runner_provider,
                         &stats_instrumentation_,
                         task_graph_runner,
                         AnimationHost::CreateForTesting(ThreadInstance::IMPL),
                         0,
-                        nullptr),
+                        std::move(image_worker_task_runner)),
       notify_tile_state_changed_called_(false) {
   // Explicitly clear all debug settings.
   SetDebugState(LayerTreeDebugState());
   SetViewportSize(gfx::Size(100, 100));
 
   // Start an impl frame so tests have a valid frame_time to work with.
   base::TimeTicks time_ticks = base::TimeTicks::FromInternalValue(1);
   WillBeginImplFrame(
       CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0, 1, time_ticks));
 }
@@ skipping 50 matching lines @@
   layerTree->BuildLayerListAndPropertyTreesForTesting();
   layerTree->UpdateDrawProperties(update_lcd_text,
                                   force_skip_verify_visible_rect_calculations);
 }
 
 AnimationHost* FakeLayerTreeHostImpl::animation_host() const {
   return static_cast<AnimationHost*>(mutator_host());
 }
 
 }  // namespace cc