cc: Add LayerTreeHost::InitParams for LayerTreeHost creation.

cc/trees/layer_tree_host_unittest_scroll.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/trees/layer_tree_host.h"
 
 #include "base/location.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 1111 matching lines @@
   bool received_stop_flinging = false;
   LayerTreeSettings settings;
 
   ThreadCheckingInputHandlerClient input_handler_client(
       impl_thread.task_runner().get(), &received_stop_flinging);
   FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
 
   ASSERT_TRUE(impl_thread.task_runner().get());
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
-  scoped_ptr<LayerTreeHost> layer_tree_host = LayerTreeHost::CreateThreaded(
-      &client, shared_bitmap_manager.get(), NULL, NULL, settings,
-      base::ThreadTaskRunnerHandle::Get(), impl_thread.task_runner(), nullptr);
+
+  LayerTreeHost::InitParams params;
+  params.client = &client;
+  params.shared_bitmap_manager = shared_bitmap_manager.get();
+  params.settings = &settings;
+  params.main_task_runner = base::ThreadTaskRunnerHandle::Get();
+  scoped_ptr<LayerTreeHost> layer_tree_host =
+      LayerTreeHost::CreateThreaded(impl_thread.task_runner(), &params);
 
   impl_thread.task_runner()->PostTask(
       FROM_HERE, base::Bind(&BindInputHandlerOnCompositorThread,
                             layer_tree_host->GetInputHandler(),
                             base::Unretained(&input_handler_client)));
 
   layer_tree_host->DidStopFlinging();
   layer_tree_host = nullptr;
   impl_thread.Stop();
   EXPECT_TRUE(received_stop_flinging);
@@ skipping 86 matching lines @@
   RunTest(true, false, true);
 }
 
 TEST_F(LayerTreeHostScrollTestLayerStructureChange, ScrollDestroyWholeTree) {
   scroll_destroy_whole_tree_ = true;
   RunTest(true, false, true);
 }
 
 }  // namespace
 }  // namespace cc