Encode frame number in pixel data for pose sync

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 743 matching lines @@
   GLenum m_readBufferOfDefaultFramebuffer;
 
   GLint m_packAlignment;
   GLint m_unpackAlignment;
   bool m_unpackFlipY;
   bool m_unpackPremultiplyAlpha;
   GLenum m_unpackColorspaceConversion;
 
   GLfloat m_clearColor[4];
   bool m_scissorEnabled;
+  GLint m_scissorBox[4];
   GLfloat m_clearDepth;
   GLint m_clearStencil;
   GLboolean m_colorMask[4];
   GLboolean m_depthMask;
 
   bool m_stencilEnabled;
   GLuint m_stencilMask, m_stencilMaskBack;
   GLint m_stencilFuncRef,
       m_stencilFuncRefBack;  // Note that these are the user specified values, not the internal clamped value.
   GLuint m_stencilFuncMask, m_stencilFuncMaskBack;
@@ skipping 736 matching lines @@
                   context,
                   context->is3d(),
                   context.is3d());
 
 }  // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(
     blink::WebGLRenderingContextBase::TextureUnitState);
 
 #endif  // WebGLRenderingContextBase_h