cc/blimp: Add synchronization for scroll/scale state.

blimp/client/test/compositor/blimp_compositor_with_fake_host.cc

Index: blimp/client/test/compositor/blimp_compositor_with_fake_host.cc
diff --git a/blimp/client/test/compositor/blimp_compositor_with_fake_host.cc b/blimp/client/test/compositor/blimp_compositor_with_fake_host.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83902cff6b124bb469f188ef0eae72a9520d545f
--- /dev/null
+++ b/blimp/client/test/compositor/blimp_compositor_with_fake_host.cc
@@ -0,0 +1,60 @@
+// Copyright 2016 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 "blimp/client/test/compositor/blimp_compositor_with_fake_host.h"
+
+#include "cc/proto/compositor_message.pb.h"
+#include "cc/test/fake_proxy.h"
+
+namespace blimp {
+namespace client {
+
+// static
+std::unique_ptr<BlimpCompositorWithFakeHost>
+BlimpCompositorWithFakeHost::Create(
+    BlimpCompositorDependencies* compositor_dependencies,
+    BlimpCompositorClient* client) {
+  std::unique_ptr<BlimpCompositorWithFakeHost> compositor = base::WrapUnique(
+      new BlimpCompositorWithFakeHost(compositor_dependencies, client));
+  compositor->Initialize();
+  return compositor;
+}
+
+BlimpCompositorWithFakeHost::BlimpCompositorWithFakeHost(
+    BlimpCompositorDependencies* compositor_dependencies,
+    BlimpCompositorClient* client)
+    : BlimpCompositor(compositor_dependencies, client, true) {}
+
+BlimpCompositorWithFakeHost::~BlimpCompositorWithFakeHost() = default;
+
+std::unique_ptr<cc::proto::CompositorMessage>
+BlimpCompositorWithFakeHost::CreateFakeUpdate(
+    scoped_refptr<cc::Layer> root_layer) {
+  std::unique_ptr<cc::proto::CompositorMessage> message =
+      base::MakeUnique<cc::proto::CompositorMessage>();
+  message->set_client_state_update_ack(false);
+  cc::LayerTree* layer_tree = host()->GetLayerTree();
+  layer_tree->SetRootLayer(root_layer);
+  cc::proto::LayerTree* layer_tree_proto =
+      message->mutable_layer_tree_host()->mutable_layer_tree();
+  layer_tree->ToProtobuf(layer_tree_proto, true);
+  return message;
+}
+
+std::unique_ptr<cc::LayerTreeHostInProcess>
+BlimpCompositorWithFakeHost::CreateLayerTreeHost() {
+  cc::LayerTreeSettings settings;
+  std::unique_ptr<cc::FakeLayerTreeHost> host =
+      cc::FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_,
+                                    settings, cc::CompositorMode::THREADED);
+  host->InitializeForTesting(
+      cc::TaskRunnerProvider::Create(base::ThreadTaskRunnerHandle::Get(),
+                                     base::ThreadTaskRunnerHandle::Get()),
+      base::MakeUnique<cc::FakeProxy>());
+  fake_host_ = host.get();
+  return std::move(host);
+}
+
+}  // namespace client
+}  // namespace blimp