Use webrtc::MouseCursorMonitor for cursor shapes

remoting/host/fake_desktop_environment.cc

Index: remoting/host/fake_desktop_environment.cc
diff --git a/remoting/host/fake_desktop_environment.cc b/remoting/host/fake_desktop_environment.cc
index 5e02ec8f54763211aea8e0df22d702dfe36155ef..135844c075a1dcb1bc77f3bb9e67cb362bd7edad 100644
--- a/remoting/host/fake_desktop_environment.cc
+++ b/remoting/host/fake_desktop_environment.cc
@@ -63,6 +63,11 @@ FakeDesktopEnvironment::CreateVideoCapturer() {
   return result.PassAs<webrtc::ScreenCapturer>();
 }
 
+scoped_ptr<webrtc::MouseCursorMonitor>
+FakeDesktopEnvironment::CreateMouseCursorMonitor() {
+  return scoped_ptr<webrtc::MouseCursorMonitor>(new FakeMouseCursorMonitor());
+}
+
 std::string FakeDesktopEnvironment::GetCapabilities() const {
   return std::string();
 }