Implement convertToBlob() in OffscreenCanvas

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 141 matching lines @@
   static std::unique_ptr<WebGraphicsContext3DProvider>
   createWebGraphicsContext3DProvider(ScriptState*,
                                      const CanvasContextCreationAttributes&,
                                      unsigned webGLVersion);
   static void forceNextWebGLContextCreationToFail();
 
   unsigned version() const { return m_version; }
 
   int drawingBufferWidth() const;
   int drawingBufferHeight() const;
+  DrawingBuffer* drawingBuffer() const;

[Justin Novosad, 2016/10/19 19:59:33]

This no longer needs to be public once other comments are addressed.

[xlai (Olivia), 2016/10/20 15:58:54]

Done.

 
   void activeTexture(GLenum texture);
   void attachShader(WebGLProgram*, WebGLShader*);
   void bindAttribLocation(WebGLProgram*, GLuint index, const String& name);
   void bindBuffer(GLenum target, WebGLBuffer*);
   virtual void bindFramebuffer(GLenum target, WebGLFramebuffer*);
   void bindRenderbuffer(GLenum target, WebGLRenderbuffer*);
   void bindTexture(GLenum target, WebGLTexture*);
   void blendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
   void blendEquation(GLenum mode);
@@ skipping 511 matching lines @@
   PassRefPtr<Image> drawImageIntoBuffer(PassRefPtr<Image>,
                                         int width,
                                         int height,
                                         const char* functionName);
 
   PassRefPtr<Image> videoFrameToImage(HTMLVideoElement*);
 
   // Structure for rendering to a DrawingBuffer, instead of directly
   // to the back-buffer of m_context.
   RefPtr<DrawingBuffer> m_drawingBuffer;
-  DrawingBuffer* drawingBuffer() const;
 
   RefPtr<WebGLContextGroup> m_contextGroup;
 
   bool m_isHidden;
   LostContextMode m_contextLostMode;
   AutoRecoveryMethod m_autoRecoveryMethod;
   // Dispatches a context lost event once it is determined that one is needed.
   // This is used for synthetic, WEBGL_lose_context and real context losses. For
   // real ones, it's likely that there's no JavaScript on the stack, but that
   // might be dependent on how exactly the platform discovers that the context
@@ skipping 846 matching lines @@
                   context,
                   context->is3d(),
                   context.is3d());
 
 }  // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(
     blink::WebGLRenderingContextBase::TextureUnitState);
 
 #endif  // WebGLRenderingContextBase_h