Enable display rotation, magnifier in unified desktop mode

ash/host/ash_remote_window_tree_host_win.cc

Index: ash/host/ash_remote_window_tree_host_win.cc
diff --git a/ash/host/ash_remote_window_tree_host_win.cc b/ash/host/ash_remote_window_tree_host_win.cc
index 67d3aaa8862f12c77251d2b37ce7775379a7c9a0..e6576e5f15a85b7cf5fe22ec7726f4888f28efc1 100644
--- a/ash/host/ash_remote_window_tree_host_win.cc
+++ b/ash/host/ash_remote_window_tree_host_win.cc
@@ -14,6 +14,7 @@ AshRemoteWindowTreeHostWin::AshRemoteWindowTreeHostWin(HWND remote_hwnd)
     : aura::RemoteWindowTreeHostWin(),
       transformer_helper_(this) {
   SetRemoteWindowHandle(remote_hwnd);
+  transformer_helper_.Init();

[oshima, 2015/05/05 15:32:13]

I forgot about this file and that's the reason why ash_unittests was failing. My
bad.

 }
 
 AshRemoteWindowTreeHostWin::~AshRemoteWindowTreeHostWin() {}