cc:: Add remote mode to the compositor

cc/trees/remote_channel_unittest.cc

+// 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 "cc/test/layer_tree_test.h"
+
+namespace cc {
+
+class RemoteChannelTest : public LayerTreeTest {
+ protected:
+  RemoteChannelTest() : calls_received_(0) {}
+
+  ~RemoteChannelTest() override {}
+
+  void BeginTest() override {
+    DCHECK(IsRemoteTest());
+    BeginChannelTest();
+  }
+  virtual void BeginChannelTest() {}
+
+  int calls_received_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(RemoteChannelTest);
+};
+
+class RemoteChannelTestMainThreadStoppedFlinging : public RemoteChannelTest {
+  void BeginChannelTest() override { proxy()->MainThreadHasStoppedFlinging(); }
+
+  void MainThreadHasStoppedFlingingOnImpl() override {
+    calls_received_++;
+    EndTest();
+  }
+
+  void AfterTest() override { EXPECT_EQ(1, calls_received_); }
+};
+
+REMOTE_DIRECT_RENDERER_TEST_F(RemoteChannelTestMainThreadStoppedFlinging);
+
+}  // namespace cc