Mac h264: Work around CGLContext+VTDecompresionSession deadlock

ui/gl/gl_image_io_surface.h

 // Copyright 2013 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_GL_GL_IMAGE_IO_SURFACE_H_
 #define UI_GL_GL_IMAGE_IO_SURFACE_H_
 
 #include <IOSurface/IOSurface.h>
 #include <stdint.h>
 
@@ skipping 57 matching lines @@
   gfx::GenericSharedMemoryId io_surface_id_;
   base::ThreadChecker thread_checker_;
 
   // GL state to support 420v IOSurface conversion to RGB.
   unsigned framebuffer_ = 0;
   unsigned vertex_shader_ = 0;
   unsigned fragment_shader_ = 0;
   unsigned program_ = 0;
   int size_location_ = -1;
   unsigned vertex_buffer_ = 0;
-  unsigned yuv_textures_[2] = {};
 
   DISALLOW_COPY_AND_ASSIGN(GLImageIOSurface);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_IMAGE_IO_SURFACE_H_