Removing the dependency on GraphicsContext for drawing images in 2D canvas

Source/core/html/canvas/WebGLRenderingContextBase.cpp

 /*
  * 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 3888 matching lines @@
 
 PassRefPtr<Image> WebGLRenderingContextBase::videoFrameToImage(HTMLVideoElement* video, BackingStoreCopy backingStoreCopy)
 {
     IntSize size(video->videoWidth(), video->videoHeight());
     ImageBuffer* buf = m_generatedImageCache.imageBuffer(size);
     if (!buf) {
         synthesizeGLError(GL_OUT_OF_MEMORY, "texImage2D", "out of memory");
         return nullptr;
     }
     IntRect destRect(0, 0, size.width(), size.height());
-    video->paintCurrentFrameInContext(buf->context(), destRect);
+    video->paintCurrentFrame(buf->canvas(), destRect, nullptr);
     return buf->copyImage(backingStoreCopy);
 }
 
 void WebGLRenderingContextBase::texImage2D(GLenum target, GLint level, GLenum internalformat,
     GLenum format, GLenum type, HTMLVideoElement* video, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateHTMLVideoElement("texImage2D", video, exceptionState)
         || !validateTexFunc("texImage2D", NotTexSubImage2D, SourceHTMLVideoElement, target, level, internalformat, video->videoWidth(), video->videoHeight(), 0, format, type, 0, 0))
         return;
 
     // Go through the fast path doing a GPU-GPU textures copy without a readback to system memory if possible.
     // Otherwise, it will fall back to the normal SW path.
     WebGLTexture* texture = validateTextureBinding("texImage2D", target, true);
     ASSERT(texture);
     if (GL_TEXTURE_2D == target) {
         if (video->copyVideoTextureToPlatformTexture(webContext(), texture->object(), level, internalformat, type, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
             texture->setLevelInfo(target, level, internalformat, video->videoWidth(), video->videoHeight(), 1, type);
             return;
         }
 
         // Try using an accelerated image buffer, this allows YUV conversion to be done on the GPU.
         OwnPtr<ImageBufferSurface> surface = adoptPtr(new AcceleratedImageBufferSurface(IntSize(video->videoWidth(), video->videoHeight())));
         if (surface->isValid()) {
             OwnPtr<ImageBuffer> imageBuffer(ImageBuffer::create(surface.release()));
             if (imageBuffer) {
                 // The video element paints an RGBA frame into our surface here. By using an AcceleratedImageBufferSurface,
                 // we enable the WebMediaPlayer implementation to do any necessary color space conversion on the GPU (though it
                 // may still do a CPU conversion and upload the results).
-                video->paintCurrentFrameInContext(imageBuffer->context(), IntRect(0, 0, video->videoWidth(), video->videoHeight()));
+                video->paintCurrentFrame(imageBuffer->canvas(), IntRect(0, 0, video->videoWidth(), video->videoHeight()), nullptr);
                 imageBuffer->context()->canvas()->flush();
 
                 // This is a straight GPU-GPU copy, any necessary color space conversion was handled in the paintCurrentFrameInContext() call.
                 if (imageBuffer->copyToPlatformTexture(webContext(), texture->object(), internalformat, type,
                     level, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
                     texture->setLevelInfo(target, level, internalformat, video->videoWidth(), video->videoHeight(), 1, type);
                     return;
                 }
             }
         }
@@ skipping 2275 matching lines @@
     return m_sharedWebGraphicsContext3D ? m_sharedWebGraphicsContext3D->drawingBuffer() : 0;
 }
 #else
 DrawingBuffer* WebGLRenderingContextBase::drawingBuffer() const
 {
     return m_drawingBuffer.get();
 }
 #endif
 
 } // namespace blink