Mac: Only allow NSOpenGLContext displaying on the main display

ui/accelerated_widget_mac/accelerated_widget_mac.h

 // Copyright 2014 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 UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_
 #define UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_
 
 #include <IOSurface/IOSurfaceAPI.h>
 #include <vector>
 
@@ skipping 100 matching lines @@
   void AcknowledgeAcceleratedFrame();
 
   // Remove a layer from the heirarchy and destroy it. Because the accelerated
   // layer types may be replaced by a layer of the same type, the layer to
   // destroy is parameterized, and, if it is the current layer, the current
   // layer is reset.
   void DestroyCAContextLayer(
       base::scoped_nsobject<CALayerHost> ca_context_layer);
   void DestroyIOSurfaceLayer(
       base::scoped_nsobject<IOSurfaceLayer> io_surface_layer);
+  void DestroyIOSurfaceNSGLSurface();
   void DestroySoftwareLayer();
 
   // The AcceleratedWidgetMacNSView that is using this as its internals.
   AcceleratedWidgetMacNSView* view_;
 
   // A phony NSView handle used to identify this.
   gfx::AcceleratedWidget native_widget_;
 
   // A flipped layer, which acts as the parent of the compositing and software
   // layers. This layer is flipped so that the we don't need to recompute the
@@ skipping 44 matching lines @@
     const base::Closure& drawn_callback,
     bool* disable_throttling, int* renderer_id);
 
 ACCELERATED_WIDGET_MAC_EXPORT
 void AcceleratedWidgetMacGotSoftwareFrame(
     gfx::AcceleratedWidget widget, float scale_factor, SkCanvas* canvas);
 
 }  // namespace ui
 
 #endif  // UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_