ash: Get output info from chromeos instead of XRandR.

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 <map>
 #include <string>
 #include <vector>
@@ skipping 26 matching lines @@
 };
 
 // This class interacts directly with the underlying Xrandr API to manipulate
 // CTRCs and Outputs.
 class CHROMEOS_EXPORT OutputConfigurator
     : public base::MessageLoop::Dispatcher,
       public base::MessagePumpObserver {
  public:
   struct ModeInfo {
     ModeInfo();
+    ModeInfo(int width, int height, bool interlaced);
 
     int width;
     int height;
     bool interlaced;
   };
 
   struct CoordinateTransformation {
     // Initialized to the identity transformation.
     CoordinateTransformation();
 
@@ skipping 42 matching lines @@
 
     // XInput device ID or 0 if this output isn't a touchscreen.
     int touch_device_id;
 
     CoordinateTransformation transform;
 
     // Display id for this output.
     int64 display_id;
 
     bool has_display_id;
+
+    // This output's index in the array returned by XRandR. Stable even as
+    // outputs are connected or disconnected.
+    int index;
   };
 
   class Observer {
    public:
     virtual ~Observer() {}
 
     // Called after the display mode has been changed. |output| contains the
     // just-applied configuration. Note that the X server is no longer grabbed
     // when this method is called, so the actual configuration could've changed
     // already.
@@ skipping 305 matching lines @@
   scoped_ptr<base::OneShotTimer<OutputConfigurator> > configure_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputConfigurator);
 };
 
 typedef std::vector<OutputConfigurator::OutputSnapshot> OutputSnapshotList;
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_