The UnderlayOpenGLHostingWindow would add a semi-transparent layer under
the window, I'm not very sure what does this class exactly do, but
removing it seems no harm to the renderer.
Fixes atom/atom#877.
#import <Cocoa/Cocoa.h>
#include "base/memory/scoped_nsobject.h"
-#import "ui/base/cocoa/underlay_opengl_hosting_window.h"
// Override NSWindow to access unhandled keyboard events (for command
// processing); subclassing NSWindow is the only method to do
// this.
-@interface AtomEventProcessingWindow : UnderlayOpenGLHostingWindow {
+@interface AtomEventProcessingWindow : NSWindow {
@private
BOOL redispatchingEvent_;
BOOL eventHandled_;