aura-mus: Hook up PerformWindowMove().

ui/aura/mus/window_tree_client.cc

Index: ui/aura/mus/window_tree_client.cc
diff --git a/ui/aura/mus/window_tree_client.cc b/ui/aura/mus/window_tree_client.cc
index 2c22cb46b6e0bbb51164e6501d08c7bc71d076ce..6aa5f9f91e7c852f8b0c438dc5fce82a78eb9ac4 100644
--- a/ui/aura/mus/window_tree_client.cc
+++ b/ui/aura/mus/window_tree_client.cc
@@ -1710,6 +1710,22 @@ void WindowTreeClient::OnWindowTreeHostStackAtTop(
   tree_->StackAtTop(change_id, window->server_id());
 }
 
+void WindowTreeClient::OnWindowTreeHostPerformWindowMove(
+    WindowTreeHostMus* window_tree_host,
+    ui::mojom::MoveLoopSource source,
+    const gfx::Point& cursor_location,
+    const base::Callback<void(bool)>& callback) {
+  PerformWindowMove(window_tree_host->window(),

[sky, 2017/01/27 19:00:31]

Is there any reason to keep the PerformWindowMove/CAncelWindowMove functions
instead of moving the implementation here? I likely kept them when this file was
forked from services/ui/public/cpp/window_Tree_client and I suspect no one calls
them directly.

[Elliot Glaysher, 2017/01/27 20:22:16]

There are not. Moved implementations.

+                    source,
+                    cursor_location,
+                    callback);
+}
+
+void WindowTreeClient::OnWindowTreeHostCancelWindowMove(
+    WindowTreeHostMus* window_tree_host) {
+  CancelWindowMove(window_tree_host->window());
+}
+
 std::unique_ptr<WindowPortMus> WindowTreeClient::CreateWindowPortForTopLevel(
     const std::map<std::string, std::vector<uint8_t>>* properties) {
   std::unique_ptr<WindowPortMus> window_port =