Don't issue any extra geometry for the IOSurface leak workaround

content/browser/renderer_host/compositing_iosurface_mac.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 CONTENT_BROWSER_RENDERER_HOST_ACCELERATED_COMPOSITING_VIEW_MAC_H
 #define CONTENT_BROWSER_RENDERER_HOST_ACCELERATED_COMPOSITING_VIEW_MAC_H
 
 #import <Cocoa/Cocoa.h>
 #import <QuartzCore/CVDisplayLink.h>
 #include <QuartzCore/QuartzCore.h>
@@ skipping 178 matching lines @@
 
   CompositingIOSurfaceMac(IOSurfaceSupport* io_surface_support,
                           NSOpenGLContext* glContext,
                           CGLContextObj cglContext,
                           GLuint shader_program_blit_rgb,
                           GLint blit_rgb_sampler_location,
                           GLuint shader_program_white,
                           bool is_vsync_disabled,
                           CVDisplayLinkRef display_link);
 
-  // Issue a draw call to try to flush references to an IOSurface out of
-  // the GL driver.
-  void DoWorkaroundForIOSurfaceLeak();
-
   // Returns true if IOSurface is ready to render. False otherwise.
   bool MapIOSurfaceToTexture(uint64 io_surface_handle);
 
   void UnrefIOSurfaceWithContextCurrent();
 
   void DrawQuad(const SurfaceQuad& quad);
 
   // Called on display-link thread.
   void DisplayLinkTick(CVDisplayLinkRef display_link,
                        const CVTimeStamp* time);
@@ skipping 69 matching lines @@
 
   // Vsync timing data.
   base::TimeTicks vsync_timebase_;
   uint32 vsync_interval_numerator_;
   uint32 vsync_interval_denominator_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_ACCELERATED_COMPOSITING_VIEW_MAC_H