update getFramebufferAttachmentParameter for WebGL 2

Source/platform/graphics/gpu/DrawingBuffer.h

 /*
  * Copyright (c) 2010, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 88 matching lines @@
     // Destruction will be completed after all mailboxes are released.
     void beginDestruction();
 
     // Issues a glClear() on all framebuffers associated with this DrawingBuffer. The caller is responsible for
     // making the context current and setting the clear values and masks. Modifies the framebuffer binding.
     void clearFramebuffers(GLbitfield clearMask);
 
     // Given the desired buffer size, provides the largest dimensions that will fit in the pixel budget.
     static IntSize adjustSize(const IntSize& desiredSize, const IntSize& curSize, int maxTextureSize);
     bool reset(const IntSize&);
-    void bind();
+    void bind(GLenum target = GL_FRAMEBUFFER);
     IntSize size() const { return m_size; }
 
     // Copies the multisample color buffer to the normal color buffer and leaves m_fbo bound.
     void commit();
 
     // commit should copy the full multisample buffer, and not respect the
     // current scissor bounds. Track the state of the scissor test so that it
     // can be disabled during calls to commit.
     void setScissorEnabled(bool scissorEnabled) { m_scissorEnabled = scissorEnabled; }
 
@@ skipping 175 matching lines @@
     // used to resize the Canvas.
     SkBitmap m_resizingBitmap;
 
     // Used to flip a bitmap vertically.
     Vector<uint8_t> m_scanline;
 };
 
 } // namespace blink
 
 #endif // DrawingBuffer_h