chromeos: Fix OutputConfigurator::Delegate leak.

chromeos/display/output_configurator.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 #define CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 254 matching lines @@
   // Returns next state.
   OutputState GetNextState(const std::vector<OutputSnapshot>& outputs) const;
 
   // Computes the relevant transformation for mirror mode.
   // |output| is the output on which mirror mode is being applied.
   // Returns the transformation, which would be identity if computations fail.
   CoordinateTransformation GetMirrorModeCTM(
       const OutputConfigurator::OutputSnapshot* output);
 
   StateController* state_controller_;
-  Delegate* delegate_;
+  scoped_ptr<Delegate> delegate_;
 
   // This is detected by the constructor to determine whether or not we should
   // be enabled.  If we aren't running on ChromeOS, we can't assume that the
   // Xrandr X11 extension is supported.
   // If this flag is set to false, any attempts to change the output
   // configuration to immediately fail without changing the state.
   bool configure_display_;
 
   // The number of outputs that are connected.
   int connected_output_count_;
@@ skipping 14 matching lines @@
   // The timer to delay configuring outputs. See also the comments in
   // |Dispatch()|.
   scoped_ptr<base::OneShotTimer<OutputConfigurator> > configure_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputConfigurator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_